cheeseraid, how many miles are on your 190E 2.6? It's possible that the engine needs major work (e.g. piston rings and valve seats) and that blow-by causes the oil pan and valve cover areas to become slightly pressurized when the engine is running which causes oil to be forced past the gaskets. Suggest doing a compression check to help diagnose the cause of excessive oil leakage. Worn valve stem seals would cause the engine to burn oil. Check the spark plugs for oily deposits.

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Fred Hoelzle