ACDelco Cooling System Seal Tabs are specially designed to prevent a minor cooling system leak from turning into a major disaster. These small four Gram tablets are designed to dissolve into your cooling system sealing and preventing small radiator leaks and coolant loss due to casting porosity in engine components. The non-toxic organic formula also controls electrolysis, neutralizes pH imbalances, lubricates internal cooling system components, and inhibits the formation of rust and scale.

Features:

• Professional-Strength formula for a permanent seal against microscopic leaks and porosity
• Harmless to all plastic, metal, aluminum and hoses in the cooling system
• Works with water and all types of antifreeze