Dinoco is the fictional sponsor associated with blue race cars in Pixar's Cars.
Dinoco is portrayed as a major fuel company and racing sponsor. Its signature blue branding is most closely associated with Strip Weathers, known as The King, and later with Lightning McQueen after the first film's Piston Cup finale.
Rust-eze sponsors Lightning McQueen at the beginning of Cars, while Octane Gain is another fictional racing brand seen in the series. Dinoco therefore appears throughout the franchise but is not McQueen's original sponsor.
The name and visual identity also echo Sinclair Oil's real-world dinosaur logo, although Dinoco is a Pixar creation. Its blue helicopter and blue race cars make the brand one of the most recognizable recurring details in the Cars universe.