I was changing the glow plug harness in my 1994 S350 (168k) and took off the intake manifold to get at things. I think I found where the blue exhaust smoke is coming from. The manifold is caked with thick oil residue that looks like it has been there for years, but also has a thinner layer on top that looks rather recent. I can trace it right back to the turbo. My guess is that there has always been a little bit of oil coming from the thing, but now there is a lot. Looks like I'm down about a quart in 1500 miles. Haven't noticed any oil loss before the last oil change
- at least not much (always leaks a bit here and there).
Are there any seals or gaskets or whatever in the turbo that can be replaced?
What to do?
Thanks
-Dave Walton