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HYPER-SEAL LIQUID METAL HEAD GASKET SEALANT SUITABLE FOR PETROL OR DIESEL ENGINES Hyper seal will repair blown head gaskets and stregthen weak ones, if your car has done over 60k miles we recommend you use Hyper Seal to strength your head gasket and avoid costly repair bills. This revolutionary 'liquid metal' is made in the USA and PERMANENTLY REPAIRS blown head gaskets and cylinder head as well as leaks in radiators, engine blocks, core plugs and metal pipes in the cooling system of petrol and diesel engines. How it works simply pour in a bottle of hyper seal into your radiator tank (mixes with anti-freeze with no issues) and leave the engine running on idle for 10 mintues as HYPER-SEAL liquid circulates and detects exposure to air (that’s where the crack is) it reacts to quickly fill the crack with its micro-copper fibers; WELDING it PERMANENTLY and becomes part of the metal that is good for the life of the engine. HYPER-SEAL can be used in petrol or diesel engines and will seal leaks in all types of metal engines, aluminum, cast iron, steel and copper. and the leak should stop, its that simple!