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As a mechanic with many years of experience there are only a couple of ways engine oil can enter the coolant system Someone added oil to the coolant overflow tank or radiator. A crack in between an oil gallery and a coolant passage either in the engine block or the cylinder head(s). There could be some other reasons but it has been my experience that ...


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There is no way to put sealant around the outside of the housing to get it to stop leaking. You could possibly put a sealant within the coolant system, such as Bar's Radiator Stop Leak, which may or may not solve your leak issue temporarily (may solve it permanently, but I never trust it). Your better bet is to just replace the gasket. This is a ...


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Water is corrosive. You will shorten your engine's life if you don't add antifreeze. Antifreeze, on top of everything else it does, also acts as a rust inhibitor. Yes, you can run straight water, but your coolant boiling point will be lower AND you'll corrode the inside of your engine and destroy your water pump.


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The check engine lights need to be read and cleared if you haven't done it already. This can only be done with an OBD-II scanner. If you don't have one, take it to an Autozone or the like. They can do it for you and will usually do so for free.



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