In Pixar's Cars 2, the fuel promoted by the World Grand Prix is Allinol.
Allinol is presented as an alternative fuel developed and promoted by Miles Axlerod, the former oil baron who organizes the World Grand Prix. The fuel becomes central to the plot because a hidden electromagnetic device causes cars using it to malfunction or catch fire. The resulting danger is used to discredit alternative fuel and make petroleum seem necessary again.
Rust-eze is Lightning McQueen's main sponsor in the first and third films, while Dinoco is a fictional fuel and racing brand that appears across the Cars universe. Fillmore's Organic Fuel is the hippie Volkswagen bus's own product in Radiator Springs. These names are connected to fuel or sponsorship, but Allinol is the specific Cars 2 World Grand Prix fuel.