As a follow up to a post about a month ago, my 850 turbo was puffing blue at startup, occasionally running rough, and going through Amsoil 0w50 at a frightening rate. Was told by shop to replace cbv (blow off equivalent) valve as many 850s with higher mileage (mine now approx 220k miles) have a leaking diaphragm. Well not to let a weekend go unproductively, replaced the oil trap system and the cbv valve. No more blue smoke or running rough. Still loosing oil from a filler gasket and turbo oil return line.

Haven't had much chance to look, but is the o ring and gasket on the oil return a hard fix to do at home? The PCV system was a definite challenge with the intake manifold, but all went back together well, and she runs! Any advice re the oil return line would be appreciated.

Many thanks,

Perry