[Lowsquire]

here is another advantage of a PCV on an early 24 stud motor, My 99A has a labrinthe rear main (no rope) and without the PCV would always drip oil due to being forced out by positive crancase pressure, which the vacuum PCV system reduces to a point where I dont get an oil patch when I park. I concur that,with the improvement in oil formulation and changing it regularly, sludge build up shouldnt be an issue.