I have been chasing a few minor oil leaks this week and I have now come back to the wastegate. When hitting a hill hard i.e. full throttle when I stop there is oil dripping out of the wastegate drain hole (if that is what the hole is for) that is just on the exhaust manifold side of the wastegate coupling.
I took the snap ring out of this turbo wastegate last summer and could not see any reason that it should be allowing oil to pass from the turbo boost hose thru the wastegate diaphragm but that is all I can figure.

Does anyone have any ideas? I am stumped on this one.
BTW - Yes, I have some blowby but not what I would call excessive.

This is my 81 300SD, it is just pissing me off now!

I'm thinking the next move is to pull apart the wastegate diaphragm and use a little high temp RTV on the surfaces and then reseal it. Why would I get so much oil here though? I mean it can leave a small puddle if I stop for 5 minutes after climbing a hill.

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'99 S420 - Mommies
'72 280SE 4.5 - looking to breathe life into it
'84 300SD Grey - Sold
'85 300SD Silver - Sold
'78 Ski Nautique