Zerex from Valvoline is the #1 selling OEM-approved coolant brand. Zerex Asian Vehicle Red Antifreeze/Coolant is proven to maximize engine life in vehicles made by Asian auto manufacturers such as Toyota, Lexus and Scion which specify a red formula thats silicate and borate-free with Hybrid Organic Acid Technology (HOAT). Specially formulated with a phosphate additive, 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. Our HOAT formula includes a special phosphate additive that protects from corrosion, scale and rust, so radiators, water pumps and other metal cooling system parts (including aluminum) stay clean and your antifreeze flows and functions properly. Zerex Asian Vehicle Red Antifreeze/Coolant contains no silicates, borates, 2-EHA, amines or nitrites. So whether youre topping off your radiator or doing a complete system flush, trust Zerex Asian Vehicle Red Antifreeze/Coolant. Made for your car. Made by Valvoline.