Quote:
Originally Posted by Snig
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That has nothing to do with build up of deposits on intake valves and ports from direct fuel injection engines WITHOUT auxilliary port injection.
It's purpose is for track use ONLY whenever you change to stickier R-Compound tires and to more aggressive aftermarket suspension setups increasing oil foaming due to the higher applied g-forces on corners or when braking/accelerating which can overwhelm the oil air separator baffles the engine being horizontally opposed, AND, more importantly, when you opt for aftermarket FI increasing blow-by rate. The idea is to prevent any engine's oil ingestion through the PCV (Positive Crankcase Ventilation) system which every modern car's engine necessarily has.