HEAD GASKET & BLOCK COOLANT LEAK REPAIR

THE WORLD’S MOST ADVANCED COOLANT LEAK REPAIR FORMULA

Welcome to the home of the Green Demon, the world’s most advanced head gasket and block coolant leak repair.  We’ll get you back on the road in no time at all!  

Green Demon is safe to use in all water cooled engines from bikes right up to heavy duty trucks.  Carefully engineered to permanently seal coolant leaks in the head, head gasket and block, Green Demon works safely with all types, brands and blends of coolant / antifreeze.  Simply shake the bottle up, add it to your cooling system and drive.  

Fixes Leaks
Permanently

Super Safe
Ceramic Formula

Save Thousands
of Dollars

100% Guarantee

If for any reason Green Demon cannot repair your leak, or once it’s made a repair that leak ever returns, then we offer a 100% money back or product replacement guarantee.

GREEN DEMON IS DEDICATED TO HEAD GASKET REPAIR

Cracks in the head, head gasket or block are serious and expensive issues for your vehicle. Ignore them and you could easily wreck your engine, costing you thousands of dollars in repairs. Head over to your local mechanic and get a price for replacing the head gasket or fixing a cracked block and you will need to be prepared for some eye watering bills.

Let Green Demon do the job for you for a fraction of the cost. Plus you’ll be back on the road even sooner. Green Demon will even repair porous block castings, which would usually require a replacement block.