Product Details: Outfit your semi to be Ready for the Road Ahead™ with improved radiator cooling, with the Motor Medic Super Heavy Duty Radiator Flush. With an advanced formula, this fluid works to remove rust, scale, contaminants, and other substances that often cause clogging in a system. Engineered with a premium blend to return radiators to their best after an efficient cleaning. FleetPride is your First Click in Heavy Duty®.