This radiator coolant provides an extended life. Compatible with any extended life heavy duty antifreeze in any diesel powered commercial vehicle engine or stationary engine. Its patented technologically advanced formulation is based upon a concentrated blend of premium long-lasting inhibitors designed to provide longer protection against temperature extremes, rust, corrosion, scale and premature water pump failure. Provides a silicate, phosphate and borate-free formulation for long lasting inhibition and corrosion protection. Protects aluminum and all other engine metals. 3.78L.