Gulf Coast Gasoline Weakens as Seasonal Fuel-Grade Switch Nears

U.S. Gulf Coast gasoline weakened versus futures for the first time in four days as the summer driving season draws to a close and the transition between summer and winter grade gasoline begins.

Conventional, 85-octane gasoline, or CBOB, on the Gulf Coast lost 0.5 cent to a discount of 15.75 cents a gallon below New York Mercantile Exchange futures at 2:45 p.m., according to data compiled by Bloomberg, the first drop since Aug. 16.