SINGAPORE- Middle East crude benchmark Dubai, as quoted by price-reporting agency S&P Global Platts, extended losses in April to an average of $20.387 a barrel, a market participate said on Thursday.

The monthly averages for April for Dubai and Oman as quoted by Platts are indicated in the table. Middle East producers set their monthly official selling prices (OSPs) at premiums or discount to these averages.

Saudi Aramco changed the benchmark for setting its official selling prices to Asia starting from October 2018 to the average of Platts Dubai and DME Oman crude futures. 

(Reporting By Shu Zhang; editing by David Evans) ((shu.zhang@thomsonreuters.com; +65-6870-3549; Reuters Messaging: Twitter @shuzhang4))