Bar's Leaks Cooling System Sealer (10 oz.)

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 1/2 bottle for 4 cylinder engines and one bottle for 6 and 8 cylinder engines.