Feature●Fit type: Vehicle Specific●The best Chemical Sealer you can buy to stop cooling system leaks Works equally well in aluminum or cast-iron blocks Cooling system must be thoroughly clean before use Does not work with antifreeze If this doesnt stop the leaks, find yourself a welder!●Part number: 35500●Package Weight: 1.6 poundsDescription Ceramic Engine Seal; 1 Pint; Do Not Use w/Antifreeze;