SINGAPORE, May 11 (Reuters) - Kuwait slashed the official selling price (OSP) for Kuwait Export Crude (KEC) to Asia in June by 70 U.S. cents from the previous month to $1.70 a barrel above the average of Oman/Dubai quotes, a price document reviewed by Reuters showed on Thursday.

The producer set the June Kuwait Super Light Crude (KSLC) OSP at $1.80 a barrel above Oman/Dubai quotes, 70 cents lower than the previous month. (Reporting by Muyu Xu; Editing by Muralikumar Anantharaman)