Management's Discussion and Analysis of Financial Condition and Results of
Operations should also be read in conjunction with the unaudited consolidated
financial statements and accompanying footnotes included under Item 1. Financial
Statements and in conjunction with our Annual Report on Form 10-K for the year
ended December 31, 2021.

Disclosures Regarding Forward-Looking Statements



This Quarterly Report on Form 10-Q, particularly Management's Discussion and
Analysis of Financial Condition and Results of Operations and Quantitative and
Qualitative Disclosures about Market Risk, includes forward-looking statements
that are subject to risks, contingencies or uncertainties. You can identify
forward-looking statements by words such as "anticipate," "believe,"
"commitment," "could," "design," "estimate," "expect," "forecast," "goal,"
"guidance," "intend," "may," "objective," "opportunity," "outlook," "plan,"
"policy," "position," "potential," "predict," "priority," "project,"
"prospective," "pursue," "seek," "should," "strategy," "target," "will," "would"
or other similar expressions that convey the uncertainty of future events or
outcomes.

Forward-looking statements include, among other things, statements regarding:

•future financial and operating results;



•environmental, social and governance ("ESG") plans and goals, including those
related to greenhouse gas ("GHG") emissions, diversity and inclusion and ESG
reporting;

•future levels of capital, environmental or maintenance expenditures, general and administrative and other expenses;

•the success or timing of completion of ongoing or anticipated capital or maintenance projects;

•business strategies, growth opportunities and expected investments;

•the timing and amount of future distributions or unit repurchases; and

•the anticipated effects of actions of third parties such as competitors, activist investors, federal, foreign, state or local regulatory authorities, or plaintiffs in litigation.



Our forward-looking statements are not guarantees of future performance and you
should not rely unduly on them, as they involve risks, uncertainties and
assumptions. Forward-looking and other statements regarding our ESG plans and
goals are not an indication that these statements are material to investors or
required to be disclosed in our filings with the SEC. In addition, historical,
current, and forward-looking ESG-related statements may be based on standards
for measuring progress that are still developing, internal controls and
processes that continue to evolve, and assumptions that are subject to change in
the future. Material differences between actual results and any future
performance suggested in our forward-looking statements could result from a
variety of factors, including the following:

                                       27

--------------------------------------------------------------------------------
  Table of Contents
•the continuance or escalation of the military conflict between Russia and
Ukraine, and related sanctions and market disruptions;

•general economic, political or regulatory developments, including inflation,
interest rates, changes in governmental policies relating to refined petroleum
products, crude oil, natural gas or NGLs, or taxation;

•the magnitude, duration and extent of future resurgences of the COVID-19
pandemic and its restrictions, including travel restrictions, business and
school closures, increased remote work, stay-at-home orders and other actions
taken by individuals, governments and the private sector to stem the spread of
the virus;

•the ability of MPC to achieve its strategic objectives and the effects of those strategic decisions on us;



•changes in estimates or projections used to assess fair value of intangible
assets, goodwill and property and equipment and/or strategic decisions or other
developments with respect to our assets that cause impairment charges;

•negative capital market conditions, including an increase of the current yield on common units;



•the ability to achieve strategic and financial objectives, including with
respect to distribution coverage, future distribution levels, proposed projects
and completed transactions;

•the success of MPC's portfolio optimization, including the ability to complete
any divestitures on commercially reasonable terms and/or within the expected
timeframe, and the effects of any such divestitures on our business, financial
condition, results of operations and cash flows;

•the adequacy of capital resources and liquidity, including the availability of
sufficient cash flow to pay distributions and access to debt on commercially
reasonable terms, and the ability to successfully execute business plans, growth
strategies and self-funding models;

•the timing and extent of changes in commodity prices and demand for crude oil, refined products, feedstocks or other hydrocarbon-based products;



•volatility in or degradation of general economic, market, industry or business
conditions as a result of the COVID-19 pandemic, other infectious disease
outbreaks, natural hazards, extreme weather events, the military conflict
between Russia and Ukraine, other conflicts, inflation, rising interest rates or
otherwise;

•changes to the expected construction costs and timing of projects and planned investments, and the ability to obtain regulatory and other approvals with respect thereto;

•completion of midstream infrastructure by competitors;

•disruptions due to equipment interruption or failure, including electrical shortages and power grid failures;

•the suspension, reduction or termination of MPC's obligations under MPLX's commercial agreements;

•modifications to financial policies, capital budgets, and earnings and distributions;

•the ability to manage disruptions in credit markets or changes to credit ratings;

•compliance with federal and state environmental, economic, health and safety, energy and other policies and regulations or enforcement actions initiated thereunder;

•adverse results in litigation;

•the effect of restructuring or reorganization of business components;

•the potential effects of changes in tariff rates on our business, financial condition, results of operations and cash flows;

•changes in foreign imports and exports of crude oil, refined products, natural gas and NGLs;

•changes in producer customers' drilling plans or in volumes of throughput of crude oil, natural gas, NGLs, refined products or other hydrocarbon-based products;



•changes in the cost or availability of third-party vessels, pipelines, railcars
and other means of transportation for crude oil, natural gas, NGLs, feedstocks
and refined products;

•the price, availability and acceptance of alternative fuels and alternative-fuel vehicles and laws mandating such fuels or vehicles;

•actions taken by our competitors, including pricing adjustments and the expansion and retirement of pipeline capacity, processing, fractionation and treating facilities in response to market conditions;

•expectations regarding joint venture arrangements and other acquisitions or divestitures of assets;

•midstream and refining industry overcapacity or under capacity;

•accidents or other unscheduled shutdowns affecting our machinery, pipelines, processing, fractionation and treating facilities or equipment, means of transportation, or those of our suppliers or customers;

•acts of war, terrorism or civil unrest that could impair our ability to gather, process, fractionate or transport crude oil, natural gas, NGLs or refined products; and



•political pressure and influence of environmental groups upon policies and
decisions related to the production, gathering, refining, processing,
fractionation, transportation and marketing of crude oil or other feedstocks,
refined products, natural gas, NGLs or other hydrocarbon-based products.

                                       28

--------------------------------------------------------------------------------
  Table of Contents
For additional risk factors affecting our business, see the risk factors
described in our Annual Report on Form 10-K for the year ended December 31,
2021. We undertake no obligation to update any forward-looking statement except
to the extent required by applicable law.

MPLX Overview



We are a diversified, large-cap MLP formed by MPC, that owns and operates
midstream energy infrastructure and logistics assets, and provides fuels
distribution services. The business consists of two segments based on the nature
of services it offers: Logistics and Storage ("L&S"), and Gathering and
Processing ("G&P"). The L&S segment is engaged in the gathering, transportation,
storage and distribution of crude oil, refined products and other
hydrocarbon-based products. The L&S segment also includes the operation of our
refining logistics, fuels distribution and inland marine businesses, terminals,
rail facilities and storage caverns. The G&P segment provides gathering,
processing and transportation of natural gas; and the transportation,
fractionation, storage and marketing of NGLs.

Significant Financial and Other Highlights



Significant financial highlights including revenues and other income, income
from operations, net income, Adjusted EBITDA attributable to MPLX and DCF
attributable to GP and LP unitholders for the three months ended September 30,
2022 and September 30, 2021 are shown in the chart below. See the Non-GAAP
Financial Information section below for the definitions of Adjusted EBITDA and
DCF and the Results of Operations section for further details regarding changes
in these metrics.
                    [[Image Removed: mplx-20220930_g1.jpg]]

(1) The 2022 amounts include non-cash gain on a lease reclassification of $509 million. See Note 14 in the unaudited consolidated financial statements for additional information.

Other Highlights



•Generated net cash provided by operating activities of $1,039 million,
distributable cash flow of $1,264 million, and adjusted free cash flow after
distributions of $22 million in the third quarter of 2022.
•Announced a third quarter 2022 distribution of $0.7750 per common unit,
representing an increase of 10 percent over the prior quarter's distribution,
resulting in a distribution coverage ratio of 1.58x for the third quarter.
•Returned $180 million and $315 million of cash to unitholders in the three and
nine months ended September 30, 2022, respectively, through the repurchase of
common units under our unit repurchase program. We repurchased approximately 6
million and 10 million common units during the three and nine months ended
September 30, 2022, respectively. As of September 30, 2022, we had $1,006
million remaining under the unit repurchase authorizations.

Current Economic Environment



Through the first nine months of 2022, our results were favorably impacted by
the continuing recovery in the environment in which our business operates. The
increase in global demand for refined products and global commodity supply
constraints have contributed to improved throughputs and higher natural gas and
NGL prices. We are unable to predict the potential effects that resurgences of
COVID-19 or the continuance or escalation of the military conflict between
Russia and Ukraine, and related sanctions or market disruptions, may have on our
financial position and results. It remains uncertain how long these conditions
may last or how severe they may become.
                                       29

--------------------------------------------------------------------------------

Table of Contents



In 2022, data indicates a sharp rise in inflation in the U.S. and globally.
Current and future inflationary effects may be driven by, among other things,
supply chain disruptions, governmental stimulus or fiscal policies and
increasing demand for certain goods and services as recovery from the COVID-19
pandemic continues. We have observed higher costs for labor and materials used
in our business. We cannot predict the effect of rising interest rates, the
concern of a recession, and higher inflation and fuel prices on demand for our
products and services. In response to this business environment, MPLX remains
focused on executing its strategic priorities of strict capital discipline,
embedding a low-cost culture, and portfolio optimization.

Non-GAAP Financial Information



Our management uses a variety of financial and operating metrics to analyze our
performance. These metrics are significant factors in assessing our operating
results and profitability and include the non-GAAP financial measures of
Adjusted EBITDA, DCF, adjusted free cash flow ("Adjusted FCF") and adjusted free
cash flow after distributions. The amount of Adjusted EBITDA and DCF generated
is considered by the board of directors of our general partner in approving
MPLX's cash distributions. Management also utilizes Segment Adjusted EBITDA in
evaluating the financial performance of our segments. The use of this measure
allows investors to understand how management evaluates financial performance to
make operating decisions and allocate resources.

We define Adjusted EBITDA as net income adjusted for: (i) depreciation and
amortization; (ii) provision/(benefit) for income taxes; (iii) interest and
other financial costs; (iv) impairment expense; (v) income from equity method
investments; (vi) distributions and adjustments related to equity method
investments; (vii) gain on sales-type leases; (viii) noncontrolling interests;
and (ix) other adjustments as deemed necessary. We also use DCF, which we define
as Adjusted EBITDA adjusted for: (i) deferred revenue impacts; (ii) sales-type
lease payments, net of income; (iii) net interest and other financial costs;
(iv) net maintenance capital expenditures; (v) equity method investment
maintenance capital expenditures paid out; and (vi) other adjustments as deemed
necessary. Segment Adjusted EBITDA represents Adjusted EBITDA attributable to
the reportable segments.

We define Adjusted FCF as net cash provided by operating activities adjusted for
(i) net cash used in investing activities; (ii) cash contributions from MPC;
(iii) cash contributions from noncontrolling interests and (iv) cash
distributions to noncontrolling interests. We define adjusted free cash flow
after distributions as Adjusted FCF less base distributions to common and
preferred unitholders.

We believe that the presentation of Adjusted EBITDA, DCF, Adjusted FCF and
adjusted free cash flow after distributions provides useful information to
investors in assessing our financial condition and results of operations. The
GAAP measures most directly comparable to Adjusted EBITDA and DCF are net income
and net cash provided by operating activities while the GAAP measure most
directly comparable to Adjusted FCF and adjusted free cash flow after
distributions is net cash provided by operating activities. These non-GAAP
financial measures should not be considered alternatives to GAAP net income or
net cash provided by operating activities as they have important limitations as
analytical tools because they exclude some but not all items that affect net
income and net cash provided by operating activities or any other measure of
financial performance or liquidity presented in accordance with GAAP. These
non-GAAP financial measures should not be considered in isolation or as
substitutes for analysis of our results as reported under GAAP. Additionally,
because non-GAAP financial measures may be defined differently by other
companies in our industry, our definitions may not be comparable to similarly
titled measures of other companies, thereby diminishing their utility. For a
reconciliation of Adjusted EBITDA and DCF to their most directly comparable
measures calculated and presented in accordance with GAAP, see the Results of
Operations section. For a reconciliation of Adjusted FCF and adjusted free cash
flow after distributions to their most directly comparable measure calculated
and presented in accordance with GAAP, see the Liquidity and Capital resources
section.

Comparability of our Financial Results

During the normal course of business, we amend or modify our contractual agreements with customers. These amendments or modifications require the agreements to be reassessed under ASC 842, which can impact the classification of revenues or costs associated with the agreement. These reassessments may impact the comparability of our financial results.


                                       30

--------------------------------------------------------------------------------
  Table of Contents
Results of Operations

The following tables and discussion are a summary of our results of operations,
including a reconciliation of Adjusted EBITDA and DCF from Net income and Net
cash provided by operating activities, to the most directly comparable GAAP
financial measures. This discussion should be read in conjunction with Item 1.
Financial Statements and is intended to provide investors with a reasonable
basis for assessing our historical operations, but should not serve as the only
criteria for predicting our future performance.

                                                  Three Months Ended September 30,                          Nine Months Ended September 30,
(In millions)                                 2022                2021            Variance              2022               2021           Variance

Revenues and other income:

Total revenues and other income(1) $ 3,401 $ 2,559

$ 842 $ 8,951 $ 7,293 $ 1,658 Costs and expenses: Cost of revenues (excludes items below)

           371              298                 73                  981              864               117
Purchased product costs                           540              421                119                1,670            1,035               635
Rental cost of sales                               22               33                (11)                 101               97                 4
Rental cost of sales - related parties             10               24                (14)                  44               86               (42)
Purchases - related parties                       364              307                 57                1,034              902               132
Depreciation and amortization                     302              324                (22)                 925              971               (46)
Impairment expense                                  -                -                  -                    -               42               (42)
General and administrative expenses                88               94                 (6)                 248              267               (19)

Other taxes                                        30               27                  3                   97               93                 4
Total costs and expenses                        1,727            1,528                199                5,100            4,357               743
Income from operations                          1,674            1,031                643                3,851            2,936               915
Related-party interest and other
financial costs                                     -                2                 (2)                   5                4                 1
Interest expense, net of amounts
capitalized                                       217              197                 20                  627              590                37
Other financial costs                              19               21                 (2)                  59               67                (8)
Income before income taxes                      1,438              811                627                3,160            2,275               885
Provision for income taxes                          1                -                  1                    6                1                 5
Net income                                      1,437              811                626                3,154            2,274               880
Less: Net income attributable to
noncontrolling interests                            9                9                  -                   26               27                (1)

Net income attributable to MPLX LP              1,428              802                626                3,128            2,247               881

Adjusted EBITDA attributable to MPLX
LP(2)                                           1,471            1,389                 82                4,321            4,115               206

DCF attributable to GP and LP
unitholders(2)                          $       1,231          $ 1,143

$ 88 $ 3,615 $ 3,468 $ 147




(1)  The three and nine months ended September 30, 2022 include a $509 million
non-cash gain on a lease reclassification. See Note 14 in the unaudited
consolidated financial statements for additional information.
(2)  Non-GAAP measure. See reconciliation below to the most directly comparable
GAAP measures.

                                       31

--------------------------------------------------------------------------------


  Table of Contents

                                                             Three Months Ended September 30,                           Nine Months Ended September 30,
(In millions)                                            2022                2021            Variance              2022                2021            Variance
Reconciliation of Adjusted EBITDA attributable to
MPLX LP and DCF attributable to GP and LP
unitholders from Net income:
Net income                                         $       1,437          $   811          $     626          $      3,154          $ 2,274          $     880
Provision for income taxes                                     1                -                  1                     6                1                  5
Interest and other financial costs                           236              220                 16                   691              661                 30
Income from operations                                     1,674            1,031                643                 3,851            2,936                915
Depreciation and amortization                                302              324                (22)                  925              971                (46)
Impairment expense                                             -                -                  -                     -               42                (42)
Income from equity method investments                       (125)             (92)               (33)                 (335)            (228)            

(107)


Distributions/adjustments related to equity method
investments                                                  166              129                 37                   450              371                 79

Gain on sales-type leases                                   (509)               -               (509)                 (509)               -               (509)
Other                                                        (27)               6                (33)                  (32)              52                (84)
Adjusted EBITDA                                            1,481            1,398                 83                 4,350            4,144                206
Adjusted EBITDA attributable to noncontrolling
interests                                                    (10)              (9)                (1)                  (29)             (29)            

-



Adjusted EBITDA attributable to MPLX LP                    1,471            1,389                 82                 4,321            4,115                206
Deferred revenue impacts                                      39               14                 25                    87               76                 11
Sales-type lease payments, net of income                       3               14                (11)                   13               68             

(55)


Net interest and other financial costs(1)                   (216)            (200)               (16)                 (635)            (618)            

(17)


Maintenance capital expenditures, net of
reimbursements                                               (40)             (21)               (19)                  (93)             (50)            

(43)


Equity method investment maintenance capital
expenditures paid out                                         (4)              (1)                (3)                  (10)              (4)                (6)
Other                                                         11               (4)                15                    28               (9)                37

DCF                                                        1,264            1,191                 73                 3,711            3,578                133
Preferred unit distributions                                 (33)             (48)                15                   (96)            (110)            

14

DCF attributable to GP and LP unitholders $ 1,231 $ 1,143 $ 88 $ 3,615 $ 3,468 $

147

(1) Excludes gain/ loss on extinguishment of debt and amortization of deferred financing costs.


                                       32

--------------------------------------------------------------------------------

Table of Contents


                                                                            Nine Months Ended September 30,
(In millions)                                                          2022                2021            Variance

Reconciliation of Adjusted EBITDA attributable to MPLX LP and DCF attributable to GP and LP unitholders from Net cash provided by operating activities: Net cash provided by operating activities

$      3,651          $ 3,671          $     (20)
Changes in working capital items                                            60             (143)               203
All other, net                                                             (51)             (11)               (40)
Loss/ (gain) on extinguishment of debt                                       1              (10)                11
Net interest and other financial costs(1)                                  635              618                 17

Other adjustments to equity method investment distributions                 45               10                 35
Other                                                                        9                9                  -
Adjusted EBITDA                                                          4,350            4,144                206
Adjusted EBITDA attributable to noncontrolling interests                   (29)             (29)                 -

Adjusted EBITDA attributable to MPLX LP                                  4,321            4,115                206
Deferred revenue impacts                                                    87               76                 11
Sales-type lease payments, net of income(2)                                 13               68                (55)
Net interest and other financial costs(1)                                 (635)            (618)               (17)
Maintenance capital expenditures, net of reimbursements                    (93)             (50)               (43)
Equity method investment maintenance capital expenditures paid
out                                                                        (10)              (4)                (6)

Other                                                                       28               (9)                37

DCF                                                                      3,711            3,578                133
Preferred unit distributions                                               (96)            (110)                14
DCF attributable to GP and LP unitholders                         $      

3,615 $ 3,468 $ 147




(1)  Excludes gain/loss on extinguishment of debt and amortization of deferred
financing costs.
(2)  The nine months ended September 30, 2021 includes one-time impact from
Refining Logistics harmonization project of $54 million.

Three months ended September 30, 2022 compared to three months ended September 30, 2021



Total revenues and other income increased $842 million in the third quarter of
2022 compared to the same period of 2021. This was primarily driven by a
contract modification that resulted in a non-cash gain on sales-type lease of
$509 million. Also contributing to the increase were higher volumes and prices
in the G&P segment of approximately $221 million. There were also increased
revenue from terminal activities, higher pipeline throughput, and fee
escalations, as well as higher income from equity method investments.

Cost of revenues increased $73 million in the third quarter of 2022 compared to
the same period of 2021. This was primarily due to higher expenses related to
repairs and maintenance, project spend and energy costs.

Purchased product costs increased $119 million in the third quarter of 2022 compared to the same period of 2021. This was primarily due to higher volumes of $113 million and higher prices of $53 million in the G&P segment, partially offset by a decrease of $48 million due to changes in the fair value of our embedded derivative.



Rental cost of sales and rental cost of sales - related parties decreased $25
million in the third quarter of 2022 compared to the same period of 2021. This
was primarily due modifications to lease contracts which resulted in a greater
portion of costs being recorded to purchases - related parties, as noted below.

Purchases - related parties increased $57 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to modifications to
lease contracts which resulted in a greater portion of costs now being recorded
to purchases - related parties as opposed to rental cost of sales - related
parties costs, as noted above, as well as to increased transportation, and
project expenses.

Depreciation and amortization decreased $22 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to accelerated
depreciation on idled assets recorded in the third quarter of 2021, and lower
depreciation as a result of the derecognition of fixed assets resulting from the
modification of certain lease contracts resulting in sales-type lease accounting
treatment in the third quarter of 2022.

                                       33

--------------------------------------------------------------------------------
  Table of Contents
Nine months ended September 30, 2022 compared to nine months ended September 30,
2021

Total revenues and other income increased $1,658 million in the first nine
months of 2022 compared to the same period of 2021. This was primarily due to
higher prices of $576 million and product volumes of $342 million within the G&P
segment. The increase also includes a non-cash gain on sales-type lease of $509
million as a result of a contract modification in the third quarter of 2022, as
well as a $107 million increase in income from equity method investments in the
2022 period. Higher service revenue within our L&S segment of $103 million,
driven primarily by higher pipeline throughput and terminal activities, also
contributed to the increase in the 2022 period.

Cost of revenues increased $117 million in the first nine months of 2022 compared to the same period of 2021. This was primarily due to higher expenses related to repairs and maintenance, project spend, and energy costs. Higher environmental response and remediation costs also contributed to the increase.



Purchased product costs increased $635 million in the first nine months of 2022
compared to the same period of 2021. This was primarily due to higher prices of
$483 million and higher volumes of $252 million, primarily in the Southwest,
partially offset by a decrease of $103 million due to changes in the fair value
of our embedded derivative.

Rental cost of sales and rental cost of sales - related parties decreased $38
million in the first nine months of 2022 compared to the same period of 2021.
This was primarily due to modifications to lease contracts which resulted in
costs now being recorded to purchases - related parties, as noted below, as
opposed to rental cost of sales - related parties. The decreases were partially
offset by higher operating costs and repairs and maintenance costs.

Purchases - related parties increased $132 million in the first nine months of
2022 compared to the same period of 2021. This was primarily due to
modifications to lease contracts which resulted in costs now being recorded to
purchases - related parties as opposed to rental cost of sales - related
parties, as noted above. There were also increased transportation costs.

Depreciation and amortization decreased $46 million in the first nine months of
2022 compared to the same period of 2021. This was primarily due to accelerated
depreciation on idled assets recorded in the 2021 period, and lower depreciation
as a result of the derecognition of fixed assets resulting from the modification
of certain lease contracts resulting in sales-type lease accounting treatment.


                                       34

--------------------------------------------------------------------------------
  Table of Contents
Segment Results

We classify our business in the following reportable segments: L&S and G&P.
Segment Adjusted EBITDA represents Adjusted EBITDA attributable to the
reportable segments. Amounts included in net income and excluded from Segment
Adjusted EBITDA include: (i) depreciation and amortization; (ii) interest and
other financial costs; (iii) impairment expense; (iv) income/(loss) from equity
method investments; (v) distributions and adjustments related to equity method
investments; (vi) gain on sales-type leases; (vii) noncontrolling interests; and
(viii) other adjustments as deemed necessary. These items are either: (i)
believed to be non-recurring in nature; (ii) not believed to be allocable or
controlled by the segment; or (iii) are not tied to the operational performance
of the segment.

The tables below present information about Segment Adjusted EBITDA for the reported segments for the three and nine months ended September 30, 2022 and 2021.

L&S Segment

Third Quarter L&S Segment Financial Highlights (in millions)

[[Image Removed: mplx-20220930_g2.jpg]][[Image Removed: mplx-20220930_g3.jpg]]


                    [[Image Removed: mplx-20220930_g4.jpg]]
                                                   Three Months Ended September 30,                         Nine Months Ended September 30,
(In millions)                                  2022              2021            Variance              2022                2021            Variance
Service revenue                             $  1,038          $    983          $     55          $      3,031          $ 2,928          $     103
Rental income                                    210               172                38                   593              597                 (4)
Product related revenue                            4                 3                 1                    15               11                  4
Sales-type lease revenue                         118               132               (14)                  343              305                 38
Income from equity method investments             72                41                31                   183              112                 71
Other income                                       8                15                (7)                   42               46                 (4)
Total segment revenues and other income        1,450             1,346               104                 4,207            3,999                208
Cost of revenues                                 160               164                (4)                  460              451                  9
Purchases - related parties                      265               232                33                   762              675                 87
Depreciation and amortization                    128               131                (3)                  387              414                (27)
General and administrative expenses               48                48                 -                   134              140                 (6)

Other taxes                                       19                19                 -                    60               57                  3
Segment income from operations                   830               752                78                 2,404            2,262                142
Depreciation and amortization                    128               131                (3)                  387              414                (27)
Income from equity method investments            (72)              (41)              (31)                 (183)            (112)               (71)
Distributions/adjustments related to equity
method investments                                75                58                17                   212              174                 38

Other                                              8                 4                 4                    19                9                 10

Segment Adjusted EBITDA(1)                       969               904                65                 2,839            2,747                 92

Capital expenditures                              80                85                (5)                  238              220                 18

Investments in unconsolidated affiliates(2) $ 12 $ 9

$ 3 $ 90 $ 31 $ 59

(1) See the Reconciliation of Adjusted EBITDA attributable to MPLX LP and DCF attributable to GP and LP unitholders from Net income table for the reconciliation to the most directly comparable GAAP measure.


                                       35

--------------------------------------------------------------------------------
  Table of Contents
(2)  The nine months ended September 30, 2022 includes a contribution of $60
million to our Bakken Pipeline joint venture to fund our share of a debt
repayment by the joint venture.

Three months ended September 30, 2022 compared to three months ended September 30, 2021



Service revenue increased $55 million in the third quarter of 2022 compared to
the same period of 2021. This was primarily driven by increased revenue from
terminal activities, increased pipeline fees due to increased throughput
outweighing lower average tariff rates, and annual fee escalations. There was
also an increase of $9 million from changes in the presentation of revenue
between service revenue, rental income and sales-type lease revenue driven by
modifications to agreements with MPC.

Rental income increased $38 million in the third quarter of 2022 compared to the
same period of 2021. This was primarily due annual fee escalations. There was
also a net increase of $3 million from changes in the presentation of revenue
between service revenue, rental income and sales-type lease revenue driven by
modifications to agreements with MPC.

Sales-type lease revenue - related parties decreased $14 million in the third
quarter of 2022 compared to the same period of 2021. This was primarily due to a
decrease of $12 million from changes in the presentation of revenue between
service revenue, rental income and sales-type lease revenue as a result of
modifications to agreements with MPC.

Income from equity methods investments increased $31 million in the third
quarter of 2022 compared to the same period of 2021. This was primarily due to
increased throughput on equity method investment pipeline systems, including the
Whistler pipeline, which was placed into service in the third quarter of 2021.

Cost of revenues decreased $4 million and Purchases - related parties increased
$33 million in the third quarter of 2022 compared to the same period of 2021.
Modifications to lease contracts resulted in a greater portion of costs being
recorded to purchases - related parties as opposed to rental cost of sales -
related parties, which is included in cost of revenues, causing a $7 million
increase and offsetting decreases to cost of revenues. The overall net increase
in the accounts was due to higher energy costs and project expense in the third
quarter of 2022.

Nine months ended September 30, 2022 compared to nine months ended September 30, 2021



Service revenue increased $103 million in the first nine months of 2022 compared
to the same period of 2021. This was primarily due to increased revenue from
terminal activities and annual fee escalations. Additionally, there was a net
increase in pipeline fees due to increased throughput outweighing lower average
tariff rates. There was also an increase of $9 million from changes in the
presentation of revenue between service revenue, rental income and sales-type
lease revenue driven by modifications to agreements with MPC.

Rental income decreased $4 million in the first nine months of 2022 compared to
the same period of 2021. This was due to a net decrease of $49 million from
changes in the presentation of lease income between service revenue, rental
income and sales-type lease revenue as a result of modifications to lease
contracts. The decrease was partially offset by increased storage fees and fee
escalations.

Sales-type lease revenue - related parties increased $38 million in the first
nine months of 2022 compared to the same period of 2021. This was primarily due
to an increase of $40 million from changes in the presentation of lease income
between service revenue, rental income and sales-type lease revenue driven by
modifications of lease contracts.

Income from equity methods investments increased $71 million in the first nine
months of 2022 compared to the same period of 2021. This was primarily due to
increased throughput on equity method investment pipeline systems, including the
Whistler pipeline which was placed into service in the third quarter of 2021.

Cost of revenues increased $9 million and Purchases - related parties increased
$87 million in the first nine months of 2022 compared to the same period of
2021. Modifications to lease contracts resulted in a greater portion of costs
being recorded to purchases - related parties as opposed to rental cost of sales
- related parties, which is included in cost of revenues, causing a $47 million
increase and offsetting decreases to cost of revenues. The overall increase in
the accounts was driven by higher project expense and higher environmental
response and remediation costs compared to the first nine months of 2021,
partially offset by decreased employee-related costs from MPC.

Depreciation and amortization decreased $27 million in the first nine months of
2022 compared to the same period of 2021. This was primarily due to the
derecognition of fixed assets due to the modification of certain lease contracts
and accelerated depreciation on refining logistics assets at MPC's idled Gallup
refinery.

                                       36

--------------------------------------------------------------------------------
  Table of Contents
L&S Operating Data

                    [[Image Removed: mplx-20220930_g5.jpg]]

                                                Three Months Ended                         Nine Months Ended
                                                   September 30,                             September 30,
                                              2022                2021                  2022                  2021
L&S
Pipeline throughput (mbpd)
Crude oil pipelines                            3,596              3,440               3,551                    3,399
Product pipelines                              2,169              2,061               2,125                    2,008
Total pipelines                                5,765              5,501               5,676                    5,407

Average tariff rates ($ per barrel)(1)
Crude oil pipelines                       $     0.93          $    0.97          $     0.91               $     0.96
Product pipelines                               0.80               0.79                0.80                     0.78
Total pipelines                           $     0.88          $    0.90          $     0.86               $     0.89

Terminal throughput (mbpd)                     3,026              3,046               3,023                    2,884

Marine Assets (number in operation)(2)
Barges                                           296                299                 296                      299
Towboats                                          23                 23                  23                       23


(1)   Average tariff rates calculated using pipeline transportation revenues
divided by pipeline throughput barrels.
(2)   Represents total at end of period.

                                       37

--------------------------------------------------------------------------------
  Table of Contents
G&P Segment

Third Quarter G&P Segment Financial Highlights (in millions)

[[Image Removed: mplx-20220930_g6.jpg]][[Image Removed: mplx-20220930_g7.jpg]]


                    [[Image Removed: mplx-20220930_g8.jpg]]
(1)  The 2022 amounts include non-cash gain on a lease reclassification of $509
million. See Note 14 in the unaudited consolidated financial statements for
additional information.

                                                     Three Months Ended September 30,                           Nine Months Ended September 30,
(In millions)                                    2022                2021            Variance               2022                2021           Variance
Service revenue                            $         537          $    519          $     18          $       1,528          $ 1,520          $      8
Rental income                                         66                80               (14)                   239              263               (24)
Product related revenue                              742               553               189                  2,263            1,357               906
Sales-type lease revenue                              28                 -                28                     28                -                28
Income from equity method investments                 53                51                 2                    152              116                36
Other income(1)                                      525                10               515                    534               38               496
Total segment revenues and other income            1,951             1,213               738                  4,744            3,294             1,450
Cost of revenues                                     243               191                52                    666              596                70
Purchased product costs                              540               421               119                  1,670            1,035               635
Purchases - related parties                           99                75                24                    272              227                45
Depreciation and amortization                        174               193               (19)                   538              557               (19)
Impairment expense                                     -                 -                 -                      -               42               (42)
General and administrative expenses                   40                46                (6)                   114              127               (13)

Other taxes                                           11                 8                 3                     37               36                 1
Segment income from operations                       844               279               565                  1,447              674               773
Depreciation and amortization                        174               193               (19)                   538              557               (19)
Gain on sales-type leases                           (509)                -              (509)                  (509)               -              (509)
Impairment expense                                     -                 -                 -                      -               42               (42)
Income from equity method investments                (53)              (51)               (2)                  (152)            (116)              (36)
Distributions/adjustments related to
equity method investments                             91                71                20                    238              197                41

Other                                                (35)                2               (37)                   (51)              43               (94)
Adjusted EBITDA attributable to
noncontrolling interests                             (10)               (9)               (1)                   (29)             (29)                -
Segment Adjusted EBITDA(2)                           502               485                17                  1,482            1,368               114

Capital expenditures                                 146                69                77                    336              135               201

Investments in unconsolidated affiliates $ 30 $ 23

$ 7 $ 108 $ 85 $ 23




(1)   The three and nine months ended September 30, 2022 include a $509 million
non-cash gain on a lease reclassification. See Note 14 in the unaudited
consolidated financial statements for additional information.
(2)  See the Reconciliation of Adjusted EBITDA attributable to MPLX LP and DCF
attributable to GP and LP unitholders from Net income table for the
reconciliation to the most directly comparable GAAP measure.

                                       38

--------------------------------------------------------------------------------

Table of Contents Three months ended September 30, 2022 compared to three months ended September 30, 2021



Service revenue increased $18 million in the third quarter of 2022 compared to
the same period of 2021. This was primarily due to higher fees from higher
volumes in the Southwest and Marcellus, an increase in revenue from cost
reimbursements, partially offset by a decrease in revenue due to a contract
modification resulting in a change in the presentation of the related income
from service revenue to rental income.

Rental income decreased $14 million in the third quarter of 2022 compared to the
same period of 2021. This was primarily due to changes in the presentation of
revenue between rental income and sales-type lease revenue as a result of
modifications to an agreement with a third party in the third quarter of 2022,
partially offset by a contract modification resulting in a change in the
presentation of the related income from service revenue to rental income.

Product related revenue increased $189 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to higher volumes in
the Southwest and Rockies of $132 million, and higher prices in the Southwest of
approximately $57 million.

Sales-type lease revenue increased $28 million in the third quarter of 2022
compared to the same period of 2021. This was due to the modification of a
gathering and compression agreement in the third quarter of 2022 that resulted
in a change in the presentation of revenue between rental income and sales-type
lease revenue.

Other income increased $515 million in the third quarter of 2022 compared to the
same period of 2021 and includes a gain on sales-type lease of $509 million as a
result of a contract modification in the third quarter of 2022.

Cost of revenues increased $52 million in the third quarter of 2022 compared to
the same period of 2021. This increase is attributable to higher operating costs
and repairs and maintenance costs in the Marcellus, Rockies, Southwest, and
Southern Appalachia.

Purchased product costs increased $119 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to higher volumes in
the Southwest and Rockies of $113 million, and higher prices of $53 million in
the Southwest, partially offset by a decrease of $48 million due to changes in
the fair value of our embedded derivative.

Purchases - related parties increased $24 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to an increase in
transportation costs.

Depreciation and amortization decreased $19 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to accelerated
depreciation on idled assets recorded in the third quarter of 2021, and lower
depreciation as a result of the derecognition of fixed assets as a result of a
lease reclassification in the third quarter of 2022. This decrease was partially
offset by depreciation on new assets placed in service after the third quarter
of 2021.

Nine months ended September 30, 2022 compared to nine months ended September 30, 2021



Service revenue increased $8 million in the first nine months of 2022 compared
to the same period of 2021. This was primarily due to higher fees from higher
volumes in the Southwest of $22 million, an increase of revenue from cost
reimbursements in the Marcellus, an increase due to a 2021 contract modification
in the Marcellus resulting in a change in the presentation of the related income
from rental income to service revenue, partially offset by decreases in revenue
related to cost reimbursements and lower volumes in the Rockies.

Rental income decreased $24 million in the first nine months of 2022 compared to
the same period of 2021. This was primarily due to changes in the presentation
of revenue between rental income, sales-type lease revenue and service revenue
as a result of modifications to agreements with third parties, partially offset
by an increase in cost reimbursement revenue in the Marcellus and Southern
Appalachia.

Product related revenue increased $906 million in the first nine months
of 2022 compared to the same period of 2021. This was primarily due to higher
prices in the Southwest, Marcellus, Southern Appalachia and Bakken of
approximately $576 million and higher fees from higher volumes in the Southwest,
Rockies, Bakken and Marcellus of $330 million.

Sales-type lease revenue increased $28 million in the first nine months
of 2022 compared to the same period of 2021. This was due to the modification of
a gathering and compression agreement in the third quarter of 2022 that resulted
in a change in the presentation of revenue between rental income and sales-type
lease revenue.

Income from equity method investments increased $36 million in the first nine
months of 2022 compared to the same period of 2021, primarily due to higher
volumes and rates associated with joint ventures in the Utica, Marcellus and
Southwest regions and an impairment recorded in the second quarter of 2021,
partially offset by increased facility expenses from a joint venture in the
Southwest.

                                       39

--------------------------------------------------------------------------------
  Table of Contents
Other income increased $496 million in the first nine months of 2022 compared to
the same period of 2021 primarily due to a non-cash gain on lease
reclassification of $509 million as a result of a contract modification in the
third quarter of 2022. The gain was partially offset by a $23 million loss on
disposal of assets during the 2022 period.

Cost of revenues increased $70 million in the first nine months of 2022 compared
to the same period of 2021. This increase is attributable to higher operating
costs and repairs and maintenance costs in the Marcellus, Rockies, and Southern
Appalachia.

Purchased product costs increased $635 million in the first nine months
of 2022 compared to the same period of 2021. This was primarily due to higher
prices of $483 million in the Southwest and Southern Appalachia, higher volumes
in the Southwest and Rockies, partially offset by a decrease of $103 million due
to changes in the fair value of our embedded derivative.

Purchases - related parties increased $45 million in the first nine months of 2022 compared to the same period of 2021, this was primarily due to an increase in transportation costs.



Depreciation and amortization decreased $19 million in the third quarter of 2022
compared to the same period of 2021. This was primarily due to accelerated
depreciation on idled assets recorded in the third quarter of 2021, and lower
depreciation as a result of the derecognition of fixed assets as a result of a
lease reclassification in the third quarter of 2022. This decrease was partially
offset by depreciation on new assets placed in service after the third quarter
of 2021.

Impairment expense decreased $42 million in the first nine months of 2022
compared to the same period of 2021 due to impairments recorded in the second
quarter of 2021 related to our continued emphasis on portfolio optimization with
the closure of certain non-core assets.


                                       40

--------------------------------------------------------------------------------
  Table of Contents
G&P Operating Data
[[Image Removed: mplx-20220930_g9.jpg]][[Image Removed: mplx-20220930_g10.jpg]][[Image Removed: mplx-20220930_g11.jpg]]

                                                              Three Months Ended                                      Three Months Ended
                                                               September 30, 2022                                     September 30, 2021
                                                                                   MPLX LP
                                                   MPLX LP(1)                    Operated(2)              MPLX LP(1)                 MPLX LP Operated(2)
G&P
Gathering Throughput (MMcf/d)
Marcellus Operations                                   1,325                         1,325                    1,373                          1,373
Utica Operations                                           -                         2,381                        -                          1,798
Southwest Operations                                   1,362                         1,642                    1,339                          1,516
Bakken Operations                                        147                           147                      147                            147
Rockies Operations                                       452                           588                      439                            585
Total gathering throughput                             3,286                         6,083                    3,298                          5,419

Natural Gas Processed (MMcf/d)
Marcellus Operations                                   4,060                         5,535                    4,099                          5,638
Utica Operations                                           -                           518                        -                            464
Southwest Operations                                   1,502                         1,666                    1,312                          1,480
Southern Appalachian Operations                          205                           205                      236                            236
Bakken Operations                                        130                           130                      146                            146
Rockies Operations                                       462                           462                      419                            419
Total natural gas processed                            6,359                         8,516                    6,212                          8,383

C2 + NGLs Fractionated (mbpd)
Marcellus Operations(3)                                  496                           496                      487                            487
Utica Operations(3)                                        -                            30                        -                             25
Southwest Operations                                       -                             -                        -                              -
Southern Appalachian Operations                           12                            12                       12                             12
Bakken Operations                                         21                            21                       25                             25
Rockies Operations                                         3                             3                        4                              4
Total C2 + NGLs fractionated(4)                          532                           562                      528                            553


                                       41

--------------------------------------------------------------------------------


  Table of Contents

                                                                Nine Months Ended                                        Nine Months Ended
                                                                September 30, 2022                                       September 30, 2021
                                                   MPLX LP(1)               MPLX LP Operated(2)             MPLX LP(1)                MPLX LP Operated(2)
G&P
Gathering Throughput (MMcf/d)
Marcellus Operations                                   1,308                        1,308                       1,324                         1,324
Utica Operations                                           -                        2,048                           -                         1,633
Southwest Operations                                   1,367                        1,605                       1,356                         1,487
Bakken Operations                                        147                          147                         149                           149
Rockies Operations                                       424                          556                         450                           602
Total gathering throughput                             3,246                        5,664                       3,279                         5,195

Natural Gas Processed (MMcf/d)
Marcellus Operations                                   4,021                        5,503                       4,167                         5,640
Utica Operations                                           -                          488                           -                           492
Southwest Operations(5)                                1,446                        1,616                       1,311                         1,436
Southern Appalachian Operations                          220                          220                         229                           229
Bakken Operations                                        138                          138                         148                           148
Rockies Operations                                       436                          436                         430                           430
Total natural gas processed                            6,261                        8,401                       6,285                         8,375

C2 + NGLs Fractionated (mbpd)
Marcellus Operations(3)                                  478                          478                         484                           484
Utica Operations(3)                                        -                           28                           -                            26
Southwest Operations(5)                                    -                            -                           3                             3
Southern Appalachian Operations                           11                           11                          12                            12
Bakken Operations                                         21                           21                          23                            23
Rockies Operations                                         3                            3                           4                             4
Total C2 + NGLs fractionated(4)                          513                          541                         526                           552



                                               Three Months Ended                         Nine Months Ended
                                                  September 30,                             September 30,
                                             2022                2021                  2022                  2021
Pricing Information
Natural Gas NYMEX HH ($ per MMBtu)       $     7.91          $    4.31          $     6.67               $     3.34

C2 + NGL Pricing ($ per gallon)(6) $ 1.01 $ 0.96

     $     1.11               $     0.81


(1)   This column represents operating data for entities that have been
consolidated into the MPLX financial statements.
(2)   This column represents operating data for entities that have been
consolidated into the MPLX financial statements as well as operating data for
MPLX-operated equity method investments.
(3)   Entities within the Marcellus and Utica Operations jointly own the
Hopedale fractionation complex. Hopedale throughput is included in the Marcellus
and Utica Operations and represent each region's utilization of the complex.
(4)   Purity ethane makes up approximately 217 mbpd and 199 mbpd of total MPLX
Operated, fractionated products for the three months ended September 30, 2022
and 2021, respectively, and approximately 200 mbpd and 196 mbpd of total
fractionated products for the nine months ended September 30, 2022 and 2021,
respectively. Purity ethane makes up approximately 210 mbpd and 194 mbpd of
total MPLX LP consolidated, fractionated products for the three months ended
September 30, 2022 and 2021, respectively, and approximately 195 mbpd and 191
mbpd of total fractionated products for the nine months ended September 30, 2022
and 2021, respectively.
(5)  The Southwest Operations for the nine months ended September 30, 2021
include the Javelina complex, which was sold on February 12, 2021. The
processing and fractionated volumes calculated for the number of days MPLX owned
these assets during 2021 were 96 MMcf/d and 17 mbpd, respectively.
(6)  C2 + NGL pricing based on Mont Belvieu prices assuming an NGL barrel of
approximately 35 percent ethane, 35 percent propane, six percent Iso-Butane, 12
percent normal butane and 12 percent natural gasoline.

                                       42

--------------------------------------------------------------------------------
  Table of Contents
Seasonality

The volume of crude oil and refined products transported and stored utilizing
our assets is affected by the level of supply and demand for crude oil and
refined products in the markets served directly or indirectly by our assets. The
majority of effects of seasonality on the L&S segment's revenues will be
mitigated by our fee-based transportation and storage services agreements with
MPC that include minimum volume commitments.

In our G&P segment, we experience minimal impacts from seasonal fluctuations
which impact the demand for natural gas and NGLs and the related commodity
prices caused by various factors including variations in weather patterns from
year to year. We are able to manage the seasonality impacts through the
execution of our marketing strategy and via our storage capabilities. Overall,
our exposure to the seasonality fluctuations is declining due to our growth in
fee-based business.

Liquidity and Capital Resources

Cash Flows



Our cash and cash equivalents were $121 million at September 30, 2022 and $13
million at December 31, 2021. The change in cash, cash equivalents and
restricted cash was due to the factors discussed below. Net cash provided by
(used in) operating activities, investing activities and financing activities
were as follows:

                                       Nine Months Ended
                                          September 30,
(In millions)                           2022            2021
Net cash provided by (used in):
Operating activities              $    3,651          $ 3,671
Investing activities                    (676)            (377)
Financing activities                  (2,867)          (3,270)
Total                             $      108          $    24



Net cash provided by operating activities decreased $20 million in the first
nine months of 2022 compared to the first nine months of 2021, primarily due to
an increase in working capital requirements offset by improved results from
operations in the first nine months of 2022 compared to the first nine months of
2021.

Net cash used in investing activities increased $299 million in the first nine
months of 2022 compared to the first nine months of 2021, primarily due to
higher capital spending and an increase in contributions to equity method
investments, which included the $60 million contribution to our Bakken Pipeline
joint venture to fund our share of a debt repayment by the joint venture. Cash
used in investing activities also included $28 million for the acquisition of
assets during the nine months ended September 30, 2022.

Financing activities were an $2,867 million use of cash in the first nine months
of 2022 compared to a $3,270 million use of cash in the first nine months of
2021. The decrease in the use of cash was due to lower net debt repayments of
$273 million in the first nine months of 2022 compared to net debt repayments of
$576 million in the same period of 2021 as well as $150 million in lower unit
repurchases in the first nine months of 2022 compared to the first nine months
of 2021. The decreases in the first nine months of 2022 were partially offset
with an increase in distributions on common units and debt issuance costs
incurred during the period.

                                       43

--------------------------------------------------------------------------------
  Table of Contents
Adjusted Free Cash Flow

The following table provides a reconciliation of Adjusted FCF and adjusted free
cash flow after distributions from net cash provided by operating activities for
the three and nine months ended September 30, 2022 and September 30, 2021.

                                                 Three Months Ended                    Nine Months Ended
                                                    September 30,                         September 30,
(In millions)                                       2022                   2021                2022               2021
Net cash provided by operating activities      $     1,039             $   1,182           $   3,651          $    3,671
Adjustments to reconcile net cash provided
by operating activities to adjusted free
cash flow
Net cash used in investing activities                 (265)                 (132)               (676)               (377)
Contributions from MPC                                  13                    14                  30                  31

Distributions to noncontrolling interests              (10)                   (9)                (29)                (29)
Adjusted free cash flow                                777                 1,055               2,976               3,296

Distributions paid to common and preferred
unitholders                                           (755)                 (745)             (2,248)             (2,228)
Adjusted free cash flow after distributions    $        22             $     310           $     728          $    1,068



Debt and Liquidity Overview

MPLX Credit Agreement

On July 7, 2022, MPLX entered into a new five-year credit agreement (the "MPLX
Credit Agreement") to replace the previous $3.5 billion credit facility that was
scheduled to expire July 2024. The new MPLX Credit Agreement matures in July
2027 and, among other things, provides for a $2.0 billion unsecured revolving
credit facility and letter of credit issuing capacity of up to $150 million.
Letter of credit issuing capacity is included in, not in addition to, the
$2.0 billion borrowing capacity. The financial covenants of the new MPLX Credit
Agreement are substantially the same as those contained in the previous credit
agreement. Borrowings under the MPLX Credit Agreement bear interest, at MPLX's
election, at either the Adjusted Term SOFR or the Alternate Base Rate, both as
defined in the MPLX Credit Agreement, plus an applicable margin.

Fixed Rate Senior Notes



On March 14, 2022, MPLX issued $1.5 billion aggregate principal amount of 4.950
percent senior notes due March 2052 (the "2052 Senior Notes") in an underwritten
public offering. The 2052 Senior Notes were offered at a price to the public of
98.982 percent with interest payable semi-annually in arrears, commencing on
September 14, 2022. The net proceeds were used to repay amounts outstanding
under the intercompany loan agreement with MPC and under the previous credit
agreement.

On August 11, 2022, MPLX issued $1.0 billion aggregate principal amount of 4.950
percent senior notes due September 2032 (the "2032 Senior Notes") in an
underwritten public offering. The 2032 Senior Notes were offered at a price to
the public of 99.433 percent with interest payable semi-annually in arrears,
commencing on March 1, 2023. The net proceeds were used to redeem all of the
3.500 percent senior notes due December 2022 and all of the 3.375 percent senior
notes due March 2023, as discussed below.

On August 25, 2022, MPLX redeemed all of the $500 million 3.500 percent senior
notes due December 2022, $14 million of which was issued by Andeavor Logistics
LP, at 100.1010 percent of the aggregate principal amount, plus accrued and
unpaid interest to, but not including the redemption date. On September 15,
2022, MPLX redeemed all of the $500 million 3.375 percent senior notes due March
2023 at 100 percent of the aggregate principal amount. The impact of these debt
extinguishments was not material to the Consolidated Statements of Income.

Our intention is to maintain an investment-grade credit profile. As of
September 30, 2022, the credit ratings on our senior unsecured debt were as
follows:

Rating Agency          Rating
Moody's                Baa2 (stable outlook)
Standard & Poor's      BBB (stable outlook)
Fitch                  BBB (stable outlook)



                                       44

--------------------------------------------------------------------------------
  Table of Contents
The ratings reflect the respective views of the rating agencies. Although it is
our intention to maintain a credit profile that supports an investment grade
rating, there is no assurance that these ratings will continue for any given
period of time. The ratings may be revised or withdrawn entirely by the rating
agencies if, in their respective judgments, circumstances so warrant.

The MPLX Credit Agreement contains certain representations and warranties,
affirmative and restrictive covenants and events of default that we consider to
be usual and customary for an agreement of this type. The financial covenant
requires MPLX to maintain a ratio of Consolidated Total Debt as of the end of
each fiscal quarter to Consolidated EBITDA (both as defined in the MPLX Credit
Agreement) for the prior four fiscal quarters of no greater than 5.0 to 1.0 (or
5.5 to 1.0 during the six-month period following certain acquisitions).
Consolidated EBITDA is subject to adjustments for certain acquisitions completed
and capital projects undertaken during the relevant period. Other covenants
restrict us and/or certain of our subsidiaries from incurring debt, creating
liens on assets and entering into transactions with affiliates. As of
September 30, 2022, we were in compliance with the covenants, including the
financial covenant with a ratio of Consolidated Total Debt to Consolidated
EBITDA of 3.50 to 1.0.

The agreements governing our debt obligations do not contain credit rating
triggers that would result in the acceleration of interest, principal or other
payments solely in the event that our credit ratings are downgraded. However,
any downgrades in the credit ratings of our senior unsecured debt ratings to
below investment grade ratings could, among other things, increase the
applicable interest rates and other fees payable under the MPLX Credit Agreement
and may limit our ability to obtain future financing, including refinancing
existing indebtedness.

Our liquidity totaled $3.6 billion at September 30, 2022 consisting of:



                                                  September 30, 2022
                                                                               Available
(In millions)                Total Capacity       Outstanding Borrowings        Capacity
MPLX Credit Agreement(1)    $         2,000      $                     -      $    2,000

MPC Loan Agreement                    1,500                            -           1,500
Total                       $         3,500      $                     -           3,500
Cash and cash equivalents                                                            121
Total liquidity                                                               $    3,621

(1) Outstanding borrowings include less than $1 million in letters of credit outstanding under this facility.



We expect our ongoing sources of liquidity to include cash generated from
operations and borrowings under the MPC Loan Agreement, the MPLX Credit
Agreement and access to capital markets. We believe that cash generated from
these sources will be sufficient to meet our short-term and long-term funding
requirements, including working capital requirements, capital expenditure
requirements, contractual obligations, and quarterly cash distributions. We may
also, from time to time, repurchase our senior notes or preferred units in the
open market, in tender offers, in privately negotiated transactions or otherwise
in such volumes, at market prices and upon such other terms as we deem
appropriate and execute unit repurchases under our unit repurchase program. MPC
manages our cash and cash equivalents on our behalf directly with third-party
institutions as part of the treasury services that it provides to us under our
omnibus agreement. From time to time, we may also consider utilizing other
sources of liquidity, including the formation of joint ventures or sales of
non-strategic assets.

Equity and Preferred Units Overview

Common units

The changes in the number of common units during the nine months ended September 30, 2022 are summarized below:



(In units)                                                   Common Units
Balance at December 31, 2021                              1,016,178,378
Unit-based compensation awards                                  190,529
Units redeemed in unit repurchase program                   (10,353,035)

Balance at September 30, 2022                             1,006,015,872



Unit Repurchase Program

On November 2, 2020, we announced the board authorization of a unit repurchase
program for the repurchase of up to $1
billion of MPLX's common units held by the public. On August 2, 2022 we
announced the board authorization for the repurchase of up to an additional $1.0
billion of MPLX common units held by the public. The authorizations have no
expiration date. During the nine months ended September 30, 2022, we repurchased
approximately 10 million common units at an average cost per unit of $31.98 and
paid $315 million of cash. As of September 30, 2022, we had repurchased a total
of approximately 35 million units at an average cost per unit of $28.63 for a
total of $994 million under the initial unit repurchase program, which reflects
the
                                       45

--------------------------------------------------------------------------------
  Table of Contents
repurchase of 532,326 common units for $16 million that were transacted in the
third quarter of 2022 and settled in the fourth quarter of 2022. As of September
30, 2022, we had $1,006 million remaining under the repurchase authorizations.

We may utilize various methods to effect the repurchases, which could include
open market repurchases, negotiated block transactions, accelerated unit
repurchases, tender offers or open market solicitations for units, some of which
may be effected through Rule 10b5-1 plans. The timing and amount of future
repurchases, if any, will depend upon several factors, including market and
business conditions, and such repurchases may be discontinued at any time.

Distributions



We intend to pay a minimum quarterly distribution to the holders of our common
units of $0.2625 per unit, or $1.05 per unit on an annualized basis, to the
extent we have sufficient cash from our operations after the establishment of
cash reserves and the payment of costs and expenses, including reimbursements of
expenses to our general partner. The amount of distributions paid under our
policy and the decision to make any distributions is determined by our general
partner, taking into consideration the terms of our partnership agreement. Such
minimum distribution would equate to $264 million per quarter, or $1,056 million
per year, based on the number of common units outstanding at September 30, 2022.

On November 1, 2022, MPLX declared a cash distribution for the third quarter of
2022, totaling $777 million, or $0.7750 per common unit. This distribution will
be paid on November 22, 2022 to common unitholders of record on November 15,
2022. Although our partnership agreement requires that we distribute all of our
available cash each quarter, we do not otherwise have a legal obligation to
distribute any particular amount per common unit. This rate will also be
received by Series A preferred unitholders.

Series B preferred unitholders are entitled to receive a fixed distribution of
$68.75 per unit, per annum, payable semi-annually in arrears on February 15 and
August 15, or the first business day thereafter, up to and including February
15, 2023. After February 15, 2023, the holders of Series B preferred units are
entitled to receive cumulative, quarterly distributions payable in arrears on
the 15th day of February, May, August and November of each year, or the first
business day thereafter, based on a floating annual rate equal to the
three-month LIBOR plus 4.652 percent, in each case assuming a distribution is
declared by the board of directors. Accordingly, cash distribution payments of
$21 million were paid to Series B unitholders on February 15, 2022 and
August 15, 2022.

MPLX has the right to redeem some or all of the Series B preferred units, at any
time, on or after February 15, 2023 at a redemption price of $1,000 per unit
plus any accumulated and unpaid distributions up to the redemption date.

The allocation of total cash distributions is as follows for the three and nine
months ended September 30, 2022 and 2021. MPLX's distributions are declared
subsequent to quarter end; therefore, the following table represents total cash
distributions applicable to the period in which the distributions were earned.
                                                 Three Months Ended                      Nine Months Ended
                                                    September 30,                           September 30,
(In millions, except per unit data)            2022                2021               2022                2021
Distribution declared:
Limited partner units - public(1)         $       275          $     476          $      789          $      998
Limited partner units - MPC(1)                    502                829               1,415               1,719

Total LP distribution declared                    777              1,305               2,204               2,717
Series A preferred units(1)                        23                 38                  65                  79
Series B preferred units                           10                 10                  31                  31
Total distribution declared                       810              1,353               2,300               2,827

Quarterly cash distributions declared per
limited partner common unit               $    0.7750          $  1.2800

$ 2.1850 $ 2.6550

(1) The three and nine months ended September 30, 2021 include a supplemental distribution amount $0.575 per common unit.


                                       46

--------------------------------------------------------------------------------
  Table of Contents
Capital Expenditures

Our operations are capital intensive, requiring investments to expand, upgrade,
enhance or maintain existing operations and to meet environmental and
operational regulations. Our capital requirements consist of maintenance capital
expenditures and growth capital expenditures. Examples of maintenance capital
expenditures are those made to replace partially or fully depreciated assets, to
maintain the existing operating capacity of our assets and to extend their
useful lives, or other capital expenditures that are incurred in maintaining
existing system volumes and related cash flows. In contrast, growth capital
expenditures are those incurred for acquisitions or capital improvements that we
expect will increase our operating capacity for volumes gathered, processed,
transported or fractionated, decrease operating expenses within our facilities
or increase operating income over the long term. Examples of growth capital
expenditures include costs to develop or acquire additional pipeline, terminal,
processing or storage capacity. In general, growth capital includes costs that
are expected to generate additional or new cash flow for MPLX.

MPLX's initial capital investment plan for 2022 totaled $900 million, which
includes growth capital of $700 million, maintenance capital of $140 million and
a $60 million investment in an unconsolidated affiliate for the repayment of our
9.19 percent indirect share of the Bakken Pipeline joint venture's debt due in
2022. Growth capital expenditures and investments in affiliates during the nine
months ended September 30, 2022 were primarily for gas gathering, processing and
de-ethanization projects in our Bakken, Marcellus, and Southwest basins and the
expansion of our crude gathering systems and long-haul pipeline investments in
the Permian and Bakken basins. Spending for the period also included the $60
million contribution to our Bakken Pipeline joint venture to fund our share of a
debt repayment by the joint venture. We continuously evaluate our capital plan
and make changes as conditions warrant.

Our capital expenditures are shown in the table below:



                                                            Nine Months Ended
                                                               September 30,
(In millions)                                                 2022             2021
Capital expenditures:
Growth capital expenditures                           $      451              $ 274
Growth capital reimbursements(1)                             (70)           

(22)


Investments in unconsolidated affiliates                     198                116
Return of capital                                            (11)               (36)

Capitalized interest                                          (6)               (11)
Total growth capital expenditures(2)                         562            

321


Maintenance capital expenditures                             123            

81


Maintenance capital reimbursements                           (30)           

(31)


Capitalized interest                                          (1)           

(1)


Total maintenance capital expenditures                        92            

49



Total growth and maintenance capital expenditures            654            

370


Investments in unconsolidated affiliates(3)                 (198)           

(116)


Return of capital(3)                                          11            

36



Growth and maintenance capital reimbursements(1)(4)          100            

53


(Increase)/ decrease in capital accruals                     (39)           

19


Capitalized interest                                           7            

12


Additions to property, plant and equipment(3)         $      535

$ 374




(1)  Growth capital reimbursements include reimbursements from customers and our
Sponsor. Prior periods have been updated to reflect these reimbursements to
conform to the current period presentation.
(2)  Total growth capital expenditures exclude $28 million of acquisitions for
the nine months ended September 30, 2022.
(3)  Investments in unconsolidated affiliates, return of capital, acquisitions,
and additions to property, plant and equipment are shown as separate lines
within investing activities in the Consolidated Statements of Cash Flows.
(4)  Growth capital reimbursements are included in changes in deferred revenue
within the operating activities section of the Consolidated Statements of Cash
Flows. Maintenance capital reimbursements are included in the Contributions from
MPC line within financing activities section of the Consolidated Statements of
Cash Flows.


                                       47

--------------------------------------------------------------------------------
  Table of Contents
Contractual Cash Obligations

As of September 30, 2022, our contractual cash obligations included debt,
finance and operating lease obligations, purchase obligations for services and
to acquire property, plant and equipment, and other liabilities. During the nine
months ended September 30, 2022, our debt obligations decreased by $250 million,
primarily due to the repayment of amounts outstanding on the previous credit
agreement, the MPC Loan Agreement, and the redemption of senior notes. These
items were funded with proceeds from the issuance of senior notes, discussed
above. There were no other material changes to our contractual obligations
outside the ordinary course of business since December 31, 2021.

Off-Balance Sheet Arrangements



Off-balance sheet arrangements comprise those arrangements that may potentially
impact our liquidity, capital resources and results of operations, even though
such arrangements are not recorded as liabilities under U.S. GAAP. Our
off-balance sheet arrangements are limited to guarantees that are described in
Note 15 of the unaudited consolidated financial statements and indemnities as
disclosed in our Annual Report on Form 10-K for the year ended December 31,
2021.

Although these arrangements serve a variety of our business purposes, we are not
dependent on them to maintain our liquidity and capital resources, and we are
not aware of any circumstances that are reasonably likely to cause the
off-balance sheet arrangements to have a material adverse effect on our
liquidity and capital resources.

Transactions with Related Parties

At September 30, 2022, MPC owned our non-economic general partnership interest and held approximately 64 percent of our outstanding common units.



We provide MPC with crude oil, product pipeline, and trucking transportation
services based on regulated tariff/contracted rates, as well as storage,
terminal, fuels distribution, and inland marine transportation services based on
contracted rates. We also have agreements with MPC under which we receive fees
for operating MPC's retained pipeline assets, providing management services for
the marine business, and operating certain of MPC's equity method investments.
MPC provides us with certain services related to information technology,
engineering, legal, accounting, treasury, human resources and other
administrative services under employee services and omnibus services agreements.

The below table shows the percentage of Total revenues and other income as well as Total costs and expenses with MPC:



                                            Three Months Ended                Nine Months Ended
                                               September 30,                     September 30,
                                               2022             2021            2022             2021
Total revenues and other income(1)                    46  %     48  %                  46  %     51  %
Total costs and expenses(2)                           24  %     26  %                  24  %     27  %

(1) 2022 periods exclude gain on sales-type leases. (2) 2021 periods exclude losses for impairment.



For further discussion of agreements and activity with MPC and related parties
see Item 1. Business in our Annual Report on Form 10-K for the year ended
December 31, 2021 and Note 4 to the unaudited consolidated financial statements
in this report.

Environmental Matters and Compliance Costs



We have incurred and may continue to incur substantial capital, operating and
maintenance, and remediation expenditures as a result of environmental laws and
regulations. If these expenditures, as with all costs, are not ultimately
reflected in the prices of our products and services, our operating results will
be adversely affected. We believe that substantially all of our competitors must
comply with similar environmental laws and regulations. However, the specific
impact on each competitor may vary depending on a number of factors, including,
but not limited to, the age and location of its operating facilities.

As previously disclosed in our Annual Report on Form 10-K for the year ended
December 31, 2021, actual expenditures may vary as the number and scope of
environmental projects are revised as a result of improved technology or changes
in regulatory requirements. During the nine months ended September 30, 2022,
environmental remediation costs increased due to a release of crude oil on our
pipeline near Edwardsville, Illinois in March of 2022. There have been no
additional significant changes to our environmental matters and compliance costs
during the nine months ended September 30, 2022.

Critical Accounting Estimates



As of September 30, 2022, there have been no significant changes to our critical
accounting estimates since our Annual Report on Form 10-K for the year ended
December 31, 2021.
                                       48

--------------------------------------------------------------------------------

Table of Contents

Accounting Standards Not Yet Adopted



We have not identified any recent accounting pronouncements that are expected to
have a material impact on our financial condition, results of operations or cash
flows upon adoption. Accounting standards are discussed in Note 2 of the
unaudited consolidated financial statements.

© Edgar Online, source Glimpses