GUNK® RADIATOR REPAIR is a non-metallic solder. Use SUPER HEAVY DUTY RADIATOR CLEANER to clean your cooling system thoroughly. Use WATER PUMP LUBRICANT and RUST INHIBITOR to keep it clean.
WARNING: This product can expose you to chemicals including Diethanolamine, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.