Oil mixture inside radiator and over flow reservoir

Asked by Wayneg97 May 09, 2020 at 12:49 PM about the 1997 Oldsmobile Cutlass Supreme 4 Dr SL Sedan

Question type: Maintenance & Repair

Good morning..I have a small coolant leak around
gasket.should I flush radiator of all the old crap
and use blue devil gasket sealer? Thanks

2 Answers

I would flush it and see if the oil comes back. A small amount of oil might be OK but a lot of oil means a leaking head gasket. Skip the Blue Devil junk.

2 people found this helpful.
155,255

Check your transmission fluid too. There's a transmission fluid cooler inside of the radiator that might be leaking transmission fluid into the cooling system. Hope that helps! Jim

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