G-40 Formula; Gallon; Pink; HOAT. ZEREX G-40 Antifreeze/Coolant provides unsurpassed protection for vehicles requiring genuine G-40 and G 12 ++ fluid. ZEREX G-40 is a premium grade, long-life coolant that employs nitrite, amine and phosphate-free, Si-organic acid technology (Si-OAT) to protect the cooling system from rust and corrosion.
