Product Details: The Baldwin Heavy Duty BTE Liquid Coolant Additive is the perfect choice for protecting your engine from cavitation, erosion, corrosion, scale and foaming. This superior liquid coolant additive is compatible with all ethylene glycol antifreeze and is designed for systems containing 40% to 60% ethylene glycol antifreeze. This provides superior protection for your engine and is the perfect choice for keeping your engine running smoothly and efficiently. FleetPride is your First Click in Heavy Duty®.