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If the block heater functions you will be able to feel the heat by touching the engine after 4-5 hrs,it is not a problem to have the block heater on overnight. If you are unable to feel the heat after multiple hrs the block heater does not funcktion so it needs to be replaced or it might be a bad connection before the heating element. Here comes a pro tip ...


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Radiator flush isn't anything magic. It is just a corrosive liquid that attacks everything in contact with it, to greater or lesser extent. You hope it dissolves the blockage before it makes a mess of anything critical like the cooling passages in the cylinder block or the inside of your water pump, or it dissolves a hole in the radiator itself. (Old ...


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