Allinol is the alternative fuel marketed in Pixar's Cars 2.
Allinol is promoted by Miles Axlerod, the former oil baron who organizes the World Grand Prix. The races are intended to demonstrate that cars can use the new fuel successfully, turning the competition into a global advertising event as well as a sporting contest.
The spy plot reveals that Allinol is connected to a scheme involving electromagnetic pulses and cars that use the fuel. This conspiracy drives Finn McMissile's investigation and brings Mater into the action. The fuel's name is a fictional part of the film's world, not a real commercial gasoline brand.
Dinoco is another fictional fuel and petroleum company in the Cars universe, but it is not the alternative fuel in Cars 2. Confusing Dinoco with Allinol changes the central motive of the film's espionage story.