Peter - on blowby, wouldn't it be noticed when removing the oil fill cap? I do not notice any "white cloud" coming from the the oil fill opening. I have seen this with other cars. I was able to ram my fingers into the air intake hose and found oil in it. Maybe that is good news, at least if it is not the turbo, I don't have to worry about it self destructing. If it is the valve seals, can live with that until oil consumption is noticeable.
Is there any way to really tell if it is the turbo seals w/o removing the turbo? Would the turbo shaft feel loose?
Thanks - Ron