I just bought a used TD04 and got to taking a look at it, and it has an oil residue on the turbine blades and housing. I can't imagine this is a good thing.
The TD04 i just pulled off my car (100k miles) has no oil whatsoever on any part of the turbine housing/wheel. Bone dry. Of coursie it has the standard black carbon deposits, but other than that, dry.
I was going to replace my high mileage TD04 with this newer one (30k miles) since mine was starting to eat coolant a little and whine a lot. What do you guys think? Are there any non-dead turbo reasons why there might be so much oil residue on the blades and housing?