This vid is with a hot engine and the valve cover hose pinched off. The cap dances around a little more than the previous video and there is an oil mist that you can't see. It is not smoke but probably from the oil sloshing around and creating the mist.
Does Mercedes have a spec for blow by? I'd be curious to measure mine. How does mine look? Maybe I'll try the garbage bag test and see how long it takes to inflate.
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