1990 760 Turbo Wagon smokes like crazy out of the tail pipe on cold start up. I believe this to be oil smoke. Once the car is up to normal operating temp, the smoke stops. It's more of an annoyance than anything at this point, but if I can avoid something expensive in the future by taking evasive action now, that would be preferable. Everything else seems normal. My initial guesses are piston rings, head gasket, or maybe a clogged PCV system. I've skimmed the FAQ and didn't see anything definitive. Anyone have any idea what this might be?


Thanks!