Protect your engine against temperature extremes, and make sure your vehicle is functioning properly, with this Prestone Command Heavy Duty Prediluted Antifreeze/Coolant 50/50. This 1 gallon bottle of Heavy Duty Prediulted Antifreeze/Coolant is nitrite free with extended life technology, to make engines last longer. Its patented advanced nitrite-free OAT formulation is designed to guard against temperature extremes, rust, cavitation corrosion, scale and premature water pump failure. An ideal addition to any garage or shed. Pick one up today and take better care of your engines!