No codes. What's the TSB bulletin?

Car is serviced by Mercedes Certified specialist, and oil pressure has never been an issue. Car is almost flawless with the way I take care of it,

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1975 W116 280S - SOLD
1994 W124 E320 Coupe - Gone

CURRENT - 1974 450SEL - 1987 560SEL

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TSB # 00/134 -18/45
Effective 12/95

Reduced oil capacity/104 engine .

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A Dalton

Please message me if you resolve this issue as I have the same exact issues you have mentioned (just that my car is 94 e320 sedan). The smoke has occurred to me a few times after high speed driving, I also have the slight idle issue when car warms up, and I found oil in the same spots with some oil on the spark plug connector for spark plug closest to the firewall (cylinder #6 i believe). The last time I saw the smoke was last summer. For me the smoke occurred on days with hot temperatures outside or it could have coincided with the same oil change that was the culprit. I was going to replace the valve cover gasket and get the kit that comes with 6 little rings for each cylinder.