Be warned Mopar fans, Chrysler’s coolant is orange too, but of a different formula than GM’s. *Red, largely found in Asian autos, lacks phosphates but has silicates and one of the OAT chemicals.

On the other hand, Organic Acid Technology (OAT) uses Organic Acids as the inhibitor. It's orange in color and is typically found in GM, Saab, and Volkswagen vehicles. The typical lifespan is ...