Stops all coolant leaks. with Blown Head Gaskets, Cracked Heads and other Coolant leaks.Manufacturer states only add to radiator after draining Anti-Freeze ! ....So obviously Anti-freeze could contaminate the repair?!?! 

* Please Note this is NOT a guaranteed Fix, but it is a last resort before a Mechanical Repair at further great expense. It usually works for most buyers. Seems very successful.

* UK Mainland free postage.