Oh.....I didn't know about the other two, I just thought it was the valve stems because of the excessive oil consumption, the ashy gray build up on the spark plugs, and of course since the plug was wet with oil. I got a Haynes manual yesterday ('84-'88, though mine is a '90, but pretty much gives me a general idea) and thats what was noted as the problem with the symptoms I was having. There is no oil leaking outside of the engine or inside the coolant.

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1990 190E 3.0L