Healthy demand for Abu Dhabi’s Murban light crude in July has hurt the values ​​of its sister grades like slightly acidic Umm Lulu and Das Blend, sources told S&P Global Commodity Insights.

Values ​​for Umm Lulu have fallen from Murban, while those for Das Blend have risen further than where producer Abu Dhabi National Oil Co had set them, traders said.

For kegs to be loaded in September, Umm Lulu’s offers in July were at a discount of around 10-15 cents/barrel to the IFAD Murban price, while…