Re:Oil Espionage: Traders Spy on Hub With Satellites, Sensor...
by protomyth on Monday October 01, 2012 @03:27PM
(#4598901)
here is a pdf document talking about blends in 2004: http://www.gao.gov/new.items/d05421.pdf
"There were 12 distinct gasoline blends in use in the United States during the summer of 2004: 11 special gasoline blends and the conventional gasoline used everywhere a special blend is not used. When different grades of gasoline, special blends used in winter, and other factors are considered, the number of gasoline blends rises to at least 45. New ozone standards and other factors may further increase the number or the use of special gasoline blends in the future, in part because EPA must approve any state’s application to require use of a special gasoline blend as long as the proposed fuel meets EPA’s environmental standards."
and a pdf map from Exxon: http://www.exxon.com/USA-English/GFM/Files/US_Gasoline_Map.p...
Gasoline prices are high because of speculators, lack of refineries, and having multiple gas formulas for different regions of the US.