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GOSS

GOSS Chemiweld Cooling System Repair 325ML

GOSS Chemiweld Cooling System Repair 325ML

Regular price $12.95 AUD
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When used as directed, Chem-i-Weld will permanently repair existing cracks, flaws and porosity in automotive cylinder heads, blocks and other cooling system castings.

Note that:
- Chem-i-Weld is not a cure for overheating as a result of coolant loss caused by cracks, flaws and porosities in castings
- Chem-i-Weld will not cure oil-to-water leaks (oil in the water)

The development of cracks in castings is a type of stress relief, whether through overheating or ice formation in the coolant or as with flaws, poor design, metallurgy, or casting technique - porosity is usually age-related. Chem-i-Weld is effective on aluminium, cast iron, steel, brass, bronze and copper castings and works by hardening on exposure to air in a confined space.

Head gaskets, irrespective of construction or material, are joints, not castings. These and other cooling system joints may leak because of:
- corrosion on the surface clamping the gasket
- distortion of the surface clamping the gasket
- a reduction of the clamping force on the gasket
- deterioration of the gasket itself

Chem-i-Weld may cure head gasket leaks, but this cannot be guaranteed. Head gaskets, unlike castings, are subject to rapid deterioration and although the Chem-i-Weld may seal the immediate gasket leak, deterioration, or further deterioration, of the gasket or clamping surface may introduce a new leak around the initial seal.

Chem-i-Weld will not cure leaks in flexible cooling system seals, e.g. wet cylinder sleeve 'O'-rings, because these are subject to movement caused by heat/cold expansion and compression whilst Chem-i-Weld sets hard. It will not cure leaks in radiators because radiator tubes and tanks are too thin-sectioned for the Chem-i-Weld to effectively adhere to them, but it will attempt to seal the exposed end of a radiator tube. For this reason, tubes must be kept submerged whilst Chem-i-Weld is being used.

Boiling the water whilst Chem-i-Weld is being used may block radiator and heater core tubes, and small water galleries in engines.

Note: For internal leaks into a combustion chamber, removing the spark plug in an affected cylinder (to reduce the cylinder pressure) for the first twenty minutes of Chem-i-Weld use was commonly done, but this practise is discouraged on vehicles with high energy ignition systems. Unless the correct procedure is used, damage to the system may result.

Chem-i-Weld and oil do not mix. If it gets into an oil sump in quantity, i.e. there is a noticeable dipstick oil level increase or oil colour change, drain the sump, fill it with fresh oil and change the oil filter before proceeding. Chem-i-Weld splash is best removed whilst still wet with hot water - there is no known solvent once it has set. Chem-i-Weld on the skin or clothes should be washed off with soap and water, and Chem-i-Weld in the eyes should be flushed out with cold water.
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