I have a 300tdi 110 and while I was checking the integrity of my turbo hoses today and found quite a bit of oil in both top and bottom intercooler hoses. There was enough oil to drip if the hose was left unattached for a short while. I also found two small shards of metal in the bottom hose coming from the turbo. When I bought the vehicle last May there was a very definate shove in the back when the turbo kicked in on acceleration, this has been absent for some time now. The engine runs quietly and smoothly with some whistle from the turbo.
I thought the turbo shaft oil seal but the metal shards put a new complexion on things. Might I need a replacement turbo.