Allinol is the alternative fuel at the center of Pixar's Cars 2.
In the film, entrepreneur Sir Miles Axlerod promotes Allinol as a clean fuel for the World Grand Prix. The race is intended to demonstrate that cars can use the new product successfully. Mater becomes suspicious after several racers suffer dangerous malfunctions, drawing him into the movie's espionage plot.
The fuel is not merely a background product. It connects the racing competition, the media campaign, and the villain's plan. Axlerod secretly arranges for Allinol to cause cars to malfunction when exposed to electromagnetic pulses. The conspiracy is designed to discredit alternative fuels and benefit petroleum interests.
Allinol is fictional, so it should not be confused with real fuels or with the automotive brands in the series. Rust-eze is Lightning McQueen's sponsor, Dinoco is a racing and fuel brand, and Octane Gain is another fictional sponsor seen in the Cars universe.