Zerex from Valvoline is the #1 selling OEM-approved coolant brand. Zerex Asian Vehicle Blue Antifreeze/Coolant is proven to maximize engine life in vehicles made by Asian auto manufacturers such as Acura, Honda, Infiniti, Nissan and others which specify a blue formula that’s silicate and borate-free with HOAT (Hybrid Organic Acid Technology). 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 Blue Antifreeze/Coolant contains no silicates, borates, 2-EHA, amines or nitrites. So whether you’re topping off your radiator or doing a complete system flush, trust Zerex Asian Vehicle Blue Antifreeze/Coolant. Made for your car. Made by Valvoline.