EXTREME coolant contains unique OAT corrosion inhibitors grouped into a package called ProShield. It also contains nitrite and Molybdate. These additives give the coolant an extended service life and provide advanced engine protection.
EXTREME coolant is designed for use in heavy duty, off-road vehicles. This includes manufactures such as Caterpillar, Cummins and many more. Consult the OEM reference chart for specific applications.
HD Expert coolants have special additives for unparalleled engine protection.
Not too hot and not too cold – HD Expert coolants keep your engine at the right operating temperature.
Avoid unnecessary service with HD Expert extended life coolants.