San Francisco Gasoline Weakens as Shell Nears End of Maintenance

Spot gasoline in San Francisco fell the most in 11 months after Royal Dutch Shell Plc neared the end of a maintenance period for its refinery in Northern California.

California-blend, or Carbob, gasoline in San Francisco weakened by 23.5 cents to a premium of 21 cents a barrel more than futures on the New York Mercantile Exchange at 3:56 p.m., according to data compiled by Bloomberg. It’s the largest one-day drop since Oct. 8.

Shell started maintenance at the 165,000-barrel-a-day refinery in Martinez, California, on Sept. 11 to “optimize operations,” Destin Singleton, a Houston-based spokeswoman for the company, said by e-mail. The work was expected to last five to seven days, according to a filing with Contra Costa County Health Services.

Carbob in Los Angeles weakened by 19.5 cents to a premium of 16 cents a barrel against futures. Conventional, 84-octane gasoline in Portland, Oregon, rose 1 cent to a premium of 20 cents.

California-blend diesel in Los Angeles weakened by 2.25 cents to a 0.5-cent premium to ultra-low-sulfur diesel futures on the Nymex. The fuel in San Francisco weakened by 0.5 cent to a premium of 6 cents.

Low-sulfur diesel in Portland weakened by 1.25 cents to parity with New York futures.

To contact the reporter on this story: Dan Murtaugh in Houston at

To contact the editor responsible for this story: Dan Stets at

Press spacebar to pause and continue. Press esc to stop.

Bloomberg reserves the right to remove comments but is under no obligation to do so, or to explain individual moderation decisions.

Please enable JavaScript to view the comments powered by Disqus.