STARFIRE PUREFLEET SCA PRECHARGED ANTIFREEZE/COOLANT is a premium, virgin, ethylene glycol-based heavy duty product that is designed for use in ANY diesel-powered truck, farm, off-road, marine or gasoline engine with aluminum and other engine metals. A 50/50 mixture of STARFIRE Antifreeze/Coolant and water provides freeze protection to -34?F and raises boiling point to +265?F when a 15 lb. pressure cap in good condition is used.