806 turbo!!

[m300td]

Hi could anyone please give me some advice I am getting a lot of blue smoke on startup and gets worse until engine warms up but If I remove the inlet air pipe (which has a lot of oil in it) at the manifold I do not get the smoke so I have put it down to the turbo is leaking oil into the inlet. Had a look under neath and everything is so compact and you cam just see the turbo
Has anyone ever changed one and what is the procedure
Many thanks
Malc

[Lighty]

Very difficult job, mostly done from underneath, personally I would take it to a garage .