Bar's Leaks Cooling System Sealer (.75 oz. powder)

Bar's Leaks Cooling System Sealer permanently seals leaks in plastic, aluminum, and metal radiators, heater cores, blocks, heads, gaskets, and freeze plugs. Prevents rust, cuts electrolysis, and lubes water pump. Compatible with all brands of antifreeze including extended life. Use one package for 4 & 6 cylinder engines. Use two packages for larger engines.