Anti-Freeze - Coolant and Radiator Additives

Avoid overheating your engine by making sure your antifreeze coolant levels are full and by regularly using a radiator flush, such as Kool It Radiator Flush and replacing it with new antifreeze coolant, such as Pentofrost (specific to European vehicles). The antifreeze coolant you have not enough? In need of a radiator additive? Browse through our selection of radiator additives by Red Line, Gunk, or Royal Purple. If you have a radiator leak and need a quick fix, Auto Barn carries Blue Devil Sealant, Bars Leak, or Block Seal to give you a hand.