Allinol is the fuel at the center of the conspiracy in Pixar's Cars 2.
The World Grand Prix is presented as a showcase for Allinol, an alternative fuel promoted by its creator, Miles Axlerod. The film's villains secretly manipulate cars using the fuel, turning the international race into part of a larger scheme rather than a straightforward sporting event.
Lightning McQueen initially chooses to use Allinol during the competition, while many characters debate whether it is safe. The apparent benefits of the fuel help the conspiracy spread, and the races give the perpetrators opportunities to target highly visible competitors.
Allinol is a fictional product created for the story. It is distinct from Rust-eze, Lightning's sponsor, and Dinoco, the long-running racing brand associated with The King and later Lightning. The fuel plot gives Cars 2 its spy-thriller structure.