SuperLife Fleet HD Truck Pre-Mix 50/50 Antifreeze is a versatile, high performance, pre-diluted automotive cooling system product designed for Heavy-Duty Truck application. SuperLife Fleet HD Truck Pre-Mix 50/50 Antifreeze is formulated with premium glycol and a superior organic acid technology additive package. It is a silicate-, borate-, phosphate-free formulation for long lasting inhibition and corrosion protection. Protects aluminum and all other engine metals and provides long term, broad-range metal protection, minimizes hot surface scaling, and prevents heat transfer surface fouling due to minor oil leakage.