Nov 27 (Reuters) - Domestic crude grades were mixed on Wednesday, dealers said, after U.S. gasoline stocks rose while crude oil stockpiles fell more than expected last week, the Energy Information Administration $(EIA)$ said.

U.S. gasoline inventories posted a surprise build ahead of the Thanksgiving holiday on Thursday. And crude inventories fell by 1.8 million barrels to 428.4 million barrels in the week, the EIA said, about thrice a 605,000-barrel draw forecast.

On the demand side, U.S. oil refiners are expected to have about 145,000 barrels per day (bpd) of capacity offline in the week ending Nov. 29, raising available refining capacity by 312,000 bpd, research company IIR Energy said on Wednesday.

Offline capacity is expected to fall to 21,000 bpd in the week ending Dec. 6, IIR added.

* Light Louisiana Sweet for January delivery eased 5 cents to a midpoint of a $1.58 premium and was seen bid and offered between a $1.15 and $2.00 a barrel premium to U.S. crude futures

* Mars Sour rose 75 cents to a midpoint of a 35-cent premium and was seen bid and offered between a 25-cent and 45-cent a barrel premium to U.S. crude futures

* WTI Midland was steady at a midpoint of a 85-cent premium and was seen bid and offered between a 75-cent and 95-cent a barrel premium to U.S. crude futures

* West Texas Sour gained 25 cents at a midpoint of a 65-cent discount and was seen bid and offered between a 75-cent and 55-cent a barrel discount to U.S. crude futures

* WTI at East Houston , also known as MEH, traded between a $1.35 and $1.55 a barrel premium to U.S. crude futures

* ICE Brent January futures rose 2 cents to settle at $72.83 a barrel on Wednesday.

* WTI January crude futures fell 5 cents to settle at $68.72 a barrel.

* The Brent/WTI spread widened 10 cents to last trade at minus $4.14, after hitting a high of minus $3.97 and a low of minus $4.14.

(Reporting by Georgina McCartney in Houston; Editing by Richard Chang)

((Georgina.McCartney@tr.com))