Help! I have a 95 850 Turbo with a voracious appetite for oil. The car has 170k miles. The oil has been changed every 3k so it has been well maintained. Recently, I've had to add about a quart a week. I even tried switching to 20w50 oil. I thought it could be the PCV valve but I can't even find it. The car does leak a little from the oil pan gasket but not enough to leak a quart a week. There does not seem to be any blue smoke coming from the tailpipe either. I once had to reconnect a tube coming from the engine to the intake manifold that feeds the turbo because it came off. I noticed a bit of oil in that tube. Could it be that something is clogged somewhere and that more oil than normal is being fed into the turbo? Help!