- Permanently seals leaking head gaskets, cracked heads and blocks (aluminum and cast iron)
- Coats the engine to inhibit rust formation and salt water corrosion during normal operation
- Seals porous castings in the cooling system
- Stops coolant leaks
- Promotes heat dissipation for added power
- 16 oz. (455 mL)
WARNING: This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause cancer. For more information go to