Have a 1998 280 c Mercedes . Have some kind of oil in antifreeze overflow tank.

15

Asked by Barbara Oct 27, 2014 at 12:00 PM about the 1997 Mercedes-Benz C-Class C 280 Sedan

Question type: Maintenance & Repair

Oil in antifreeze overflow tank

3 Answers
115

lakers65 answered 9 years ago

IF it is dark color oil, it might be transmission fluid mixed with your anti freeze. there is a transmission cooling system within the radiator and it seems to be leaking within the radiator.

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migration_scarletpim... answered 9 years ago

personally would flush the coolant system (drain, flush, refill). if it happens again there has to be a leak. check your oil levels on transmitions to see if it drops. You may just have to replace some gaskets. but the diagnostic is good to start with

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15

Barbara answered 9 years ago

I had that done, came back and is a brown color like motor oil. Going to have a leak down test done next. Thanks

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