There have been many discussions about crankcase breather oil going into the air intake system, the leaks and problems it brings etc. I am considering installing an oil collector to remove the oil before it goes into the turbo. My question is: is this oil needed for lubrication of the turbo? It's going into the intake vanes so does it really lubricate anything? It doesn't seem like it is a good thing to me but MB mechanics will tell you that that is the way Mercedes designed it so it must be needed. Isn't there an oil supply to the turbo bearings?