West Coast Gasoline Weakens as Tesoro Refinery Finishes Work

California-blend gasoline in San Francisco and Los Angeles fell after Tesoro Corp. (TSO) completed planned maintenance June 8 at its refinery near Los Angeles.

Tina Barbee, a San Antonio-based spokeswoman for the company, said in an e-mailed statement that maintenance on unspecified units had finished after beginning June 5 at the 97,000-barrel-a-day plant in Wilmington, California.

Carbob gasoline in Los Angeles fell 2.5 cents to a discount of 6 cents a gallon against futures traded on the New York Mercantile Exchange at 4:40 p.m., according to data compiled by Bloomberg.

The premium of California-blend diesel to New York heating oil futures narrowed 0.25 cent to 4.5 cents a gallon.

Gasoline in San Francisco fell 3.75 cents to a discount of 2 cents a gallon. California-blend diesel in San Francisco remained unchanged at a premium of 6.5 cents.

The discount for conventional, 87-octane gasoline in Portland, Oregon, was unchanged at 5 cents. Low-sulfur diesel in Portland weakened 7 cents to a premium of 3 cents.

To contact the reporter on this story: Dan Murtaugh in Houston at dmurtaugh@bloomberg.net

To contact the editor responsible for this story: Dan Stets at dstets@bloomberg.net