ATP Chemicals & Supplies - Bar's Leak 11oz Radiator Stop Leak

Bar's Leak 11oz Radiator Stop Leak is a premium antifreeze/coolant additive designed to effectively seal minor cooling system leaks and drips caused by normal wear and age. Compatible with all types and colors of antifreeze coolant or water, this product works on plastic, aluminum, and metal radiators, heater cores, engine cooling jackets, gaskets (including head gaskets), water pumps, and freeze plugs. Its pre-dissolved formula ensures easy installation without clogging the cooling system. One bottle treats up to 4 gallons, making it suitable for most 6 and 8 cylinder passenger vehicles and light trucks. For four-cylinder engines, use half a bottle. Regular use helps prevent future leaks and maintains optimal cooling system performance.