{"product_id":"goss-chemiweld-cooling-system-repair-325ml","title":"GOSS Chemiweld Cooling System Repair 325ML","description":"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.\u003cbr\u003e\u003cbr\u003eNote that:\u003cbr\u003e- Chem-i-Weld is not a cure for overheating as a result of coolant loss caused by cracks, flaws and porosities in castings\u003cbr\u003e- Chem-i-Weld will not cure oil-to-water leaks (oil in the water)\u003cbr\u003e\u003cbr\u003eThe 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.\u003cbr\u003e\u003cbr\u003eHead gaskets, irrespective of construction or material, are joints, not castings. These and other cooling system joints may leak because of: \u003cbr\u003e- corrosion on the surface clamping the gasket\u003cbr\u003e- distortion of the surface clamping the gasket\u003cbr\u003e- a reduction of the clamping force on the gasket\u003cbr\u003e- deterioration of the gasket itself\u003cbr\u003e\u003cbr\u003eChem-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.\u003cbr\u003e\u003cbr\u003eChem-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.\u003cbr\u003e\u003cbr\u003eBoiling the water whilst Chem-i-Weld is being used may block radiator and heater core tubes, and small water galleries in engines.\u003cbr\u003e\u003cbr\u003eNote: 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.\u003cbr\u003e\u003cbr\u003eChem-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.","brand":"GOSS","offers":[{"title":"Default Title","offer_id":44062359879939,"sku":"P0002471","price":12.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/8673\/3315\/files\/goss-2021-13a_c7603534-6d96-4d7c-83a4-d19f492d8d48_yli4w9.jpg?v=1773236735","url":"https:\/\/checkout.sparesbox.com.au\/products\/goss-chemiweld-cooling-system-repair-325ml","provider":"Sparesbox","version":"1.0","type":"link"}