Question about 2000 Jeep Grand Cherokee

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Not holding antifreeze, found puddle of oil and antifreeze under the car. reservoir was empty, added antifreeze to reservoir ....still leaks

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You likely will not like my answer but what you need to do is get underneath and actually look very carefully for the source of the leak. There is no place where both coolant and oil can leak at the same time. If you find oil in the radiator or coolant in the engine oil, then you have a bad head gasket. Usually though you would have an overheating problem or steam from the tailpipe and the engine would run poorly if that was the case.
There are numerous points where coolant or oil can leak. The list is too long to write. I'd definitely look at the hoses, radiator and water pump first though as they are the most common places coolant leaks develop. As for the oil leak, check the filter, valve cover and drain plug first, otherwise any place two engine parts are bolted together it's possible to have seepage from a gasket.
If you cannot find the source, any good shop can do a pressure test or dye test to find it for you.

Posted on Sep 29, 2010

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