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Why is summer fuel more expensive than winter fuel?

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  • "Guide to Federal and State Summer RVP Standards for Conventional Gas Only." Environmental Protection Agency. April 15, 2008.
  • "Study of Boutique Fuels and Issues Relating to Transition from Winter to Summer Gasoline." Environmental Protection Agency. October 2001.
  • "The Plain English Guide to the Clean Air Act: Cars, Trucks, Buses and "Nonroad" Equipment." June 11, 2007.
  • Bailey, Ronald. "Gasoline Prices: Conspiracy or Plot?" Reason Magazine. March 23, 2007.
  • Patterson, Dan. "Why Do Gas Prices Go Up In the Summer?" ArcaMax. April 3, 2007.
  • Rapier, Robert. "Refining 101: Summer Gasoline." The Oil Drum. March 16, 2007.
  • Rapier, Robert. "Refining 101: Winter Gasoline." The Oil Drum. Sept. 15, 2006.
  • Schechner, Sam. "What Is Summer-Blend Gas?" Slate. April 12, 2004.