The eighth largest U.S. oil refiner's three plants processed 776,000 barrels of oil per day (bpd), up from 732,000 bpd a year earlier, it said. Refinery utilization rates, a key measure of efficiency, rose to 101% from 95% in the first quarter this year, the company's parent posted on Twitter.

(Reporting by Marianna Parraga, writing by Gary McWilliams)