Oil in coolant reservoir

Asked by Feb 01, 2015 at 12:02 AM about the 1998 Chevrolet Cavalier RS Coupe

Question type: Maintenance & Repair

Starts and runs great. oil in engine looks
fine Not milky and is free of water.

3 Answers

Maybe an eight of an inch of oil floating on top!

23,235

Is your transmission oil cooler internal to your radiator? It could be ATF in the radiator fluid and not engine oil. If it is engine oil, you may have a head/intake gasket issue, which is allowing oil to escape into the water jacket. Oil in the radiator fluid will negatively affect engine cooling, obviously the more oil the worse the effect - not to mention you still have the problem of what is leaking...

60

check your oil and see if it looks like milky

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