Guaranteed repair for the life of your engine with K-Seal Ultimate Head Gasket Repair 472ml. It is the simple, permanent fix for blown head gaskets, cracked heads and blocks, and porous engine blocks. Unique formula works with all water-cooled engines – there’s no need to drain or flush your cooling system, and it doesn’t matter what kind of antifreeze or coolant you’ve used previously. Simply shake the bottle, pour Ultimate Head Gasket Repair 472ml into your cooling system, and you’re back on the road. Just one bottle of Ultimate Head Gasket Repair is enough to fix blown head gaskets and cracked heads in cars, SUVs and small trucks. For larger engines, simply use two bottles . Featu res: Fixes blown head gaskets, cracked heads and blocks Guaranteed to make a repair A permanent repair, guaranteed for the lifetime of the engine Scientifically tested NOTE: Please use extreme caution when working on a hot cooling system as hot coolant and gases could cause injury. If in doubt please consult a qualified mechanic.  How to Use: 1. Shake the bottle K-Seal Ultimate Head Gasket Repair will naturally separate if left to sit for an extended period. It’s important to shake the bottle for 30 seconds before application, to ensure an effective treatment. 2. Pour into the radiator Pour Ultimate Head Gasket Repair into your radiator (but not directly onto the radiator core) or header / expansion tank. It will not be affected by any coolant, antifreeze or other additives already in the cooling system. It can be used in hot or cold engines. 3. Start your engine and get back on the road! Once you have applied Ultimate Head Gasket Repair to your coolant system, simply run your engine as normal.