What corporation based in Superior, Wisconsin sponsored the 2010 AMA Pro Supersport Championship?
2010 AMA Pro Supersport Championship:  Title sponsors for the series include Sunoco, Amsoil, National Guard, Dunlop, Speedcom and SunTrust. Amsoil: Amsoil Inc. is an American corporation based in Superior, Wisconsin that primarily formulates and packages synthetic lubricants and filters.
Amsoil Inc.