US Cash Crude-Grades dip on weakened refinery demand, ample fuel supplies

June 4 (Reuters) - Grades fell on Wednesday, dealers said, on weakened refinery demand and ample domestic gasoline stocks.

U.S. oil refiners are expected to have about 276,000 barrels per day of capacity offline in the week ending June 6, decreasing available refining capacity by 11,000 bpd, research company IIR Energy said on Wednesday.

Meanwhile, gasoline stocks USOILG=ECI rose by 5.2 million barrels in the week to 228.3 million barrels, the Energy Information Administration said, compared with expectations for a 600,000-barrel build.

Product supplied of gasoline, a proxy for demand, fell by 1.2 million barrels per day to 8.3 million barrels, despite the start of the summer driving season after the Memorial Day holiday weekend, typically a time of increased demand.

* Light Louisiana Sweet WTC-LLS for July delivery fell 2 cents to a midpoint of a $2.68 premium and was seen bid and offered between a $2.60 and $2.75 a barrel premium to U.S. crude futures CLc1

* Mars Sour WTC-MRS fell 15 cents to a midpoint of a $1.25 premium and was seen bid and offered between a $1.15 and $1.35 a barrel premium to U.S. crude futures CLc1

* WTI Midland WTC-WTM fell 5 cents to a midpoint of a 60-cent premium and was seen bid and offered between a 50-cent and 70-cent a barrel premium to U.S. crude futures CLc1

* West Texas Sour WTC-WTS fell 5 cents to a midpoint of a parity and was seen bid and offered between a discount of 10 cents and a 10-cent a barrel premium to U.S. crude futures CLc1

* WTI at East Houston WTC-MEH, also known as MEH, traded between a 70-cent and 90-cent a barrel premium to U.S. crude futures CLc1

* ICE Brent August futures LCOc1 fell 77 cents to settle at $64.86 a barrel

* WTI July crude CLc1 futures fell 56 cents to settle at $62.85 a barrel

* The Brent/WTI spread WTCLc1-LCOc1 narrowed 13 cents to last trade at minus $3.02, after hitting a high of minus $2.98 and a low of minus $3.16