Allinol is the fictional fuel brand promoted during the World Grand Prix in Pixar’s Cars 2.
Miles Axlerod presents Allinol as an environmentally friendly alternative fuel and uses the World Grand Prix to showcase it. The marketing campaign is central to the movie’s conflict because the fuel is connected to a plan targeting cars with internal-combustion engines.
The film’s plot reveals that Allinol can cause engines to heat dangerously when activated by an electromagnetic pulse. The resulting explosions are designed to make the fuel appear unsafe and encourage the world to abandon traditional cars. Mater discovers evidence of the scheme while trying to prove that the lemon cars are involved.
Allinol is fictional and should not be confused with the real automotive fuel brand Castrol, which had a promotional association with Cars 2. Rust-eze and Dinoco are also important fictional brands in the franchise, but they are associated with sponsorship and racing rather than the World Grand Prix fuel campaign.