Engine Coolant / Antifreeze-G48 Blue Concentrate - 1 Gal. Valvoline 861583. ZEREXTM G48(R) Antifreeze/Coolant provides unsurpassed protection for vehicles requiring genuine G48 fluid. ZEREX G48 is a premium grade coolant that employs hybrid technology of a mixture of inorganic and organic corrosion inhibitors to protect the cooling system from rust and corrosion.
