Quote:
Originally Posted by blue2000s
-Confused-
All AOS's pull vacuum from the same place.
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No, you are confusing a mechanical air oil separator, which is simply a tank like device with screens and baffles that allows air to detrain or physically come out from the oil, and the AOS system on a Porsche that is a combination mechanical device and a vacuum source (the intake manifold vacuum) to lower the ambient pressures in the sump and allow the low-tension piston rings to seal.
Engines with inherent low manifold vacuum signals, such as a race engine, using a mechanical separator by design still need a vacuum source, usually a belt driven vacuum pump.