REX HD Diesel Ready 50/50 pre-diluted antifreeze streamlines maintenance procedures for operators of mixed fleet vehicles by offering a pre-charged, pre-mixed, multi-engine coolant suitable for all vehicles in the fleet. The low silicate, non-phosphated inhibitor package has been proven over decades of use and provides superior protection against cavitation erosion, corrosion and scale formation in all heavy duty cooling system applications. And because it comes fully formulated and pre-charged with premium supplemental coolant additives (SCA?s) the risk of mixing errors is eliminated, when refilling low coolant levels without adding additional SCA?s.