Quote:
Originally Posted by DennisAN
I'm still trying to figure out the function of the AOS. Isn't it roughly equivalent in function to an old-fashioned PCV valve?
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Yes like a pcv but because the motor is a flat 6 it has a harder time controlling the oil vapors. Its also different from a pcv in that the porsche uses a close crankcase system with no vent. So in instances where a motor has more blowby and higher load it tends to force the blowby back into the intake.
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