Zerex from Valvoline is the #1 selling OEM-approved coolant brand. Zerex Original Green Antifreeze/Coolant is proven to maximize engine life in older passenger cars and light trucks made by GM, Ford, Chrysler, Hyundai, Kia, Nissan, Mazda and others which specify a low silicate containing green formula with Inorganic Additive Technology (IAT). Relied upon for decades by automakers worldwide, Zerex is made for your car and protects better than industry standards against corrosion, leaking, deposits as well as freezing and boiling  the four main causes of cooling system failure, which is the leading cause of engine breakdown. So whether youre topping off your radiator or doing a complete system flush, trust Zerex to help your engine keep its cool.