Quote:
Originally Posted by phunk
The one and the only thing that travels through the lower intake manifold runners aside from intake air, is PCV system re-circulation.
Its just PCV oil not being evenly distributed. While it leaves a film on the runners, its effects to engine performance are negligible.
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Thanks! I was concerned for a moment. 
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2009 370z #206 (all mods are Home Depot)
2009 Ducati 848 (full Ohlins, Termignoni, etc)
2003 Grand Cherokee (long arms, big tires, 4.56, lockers)
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