Originally Posted by jp4fun
So. Somebody explain to me what this thing does or at least why it is beneficial.
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It separates the engine oil from the air in the air intake.
Oil carried into the intake is one of the potential sources of engine oil consumption, especially if the engine oil has vaporized.
This kind of modification is even more crucial on vehicles driven hard and/or have direct injection instead of the older fuel injection systems, as some believe it reduces the carbon build-up on the intake valves and intake ports of the engine.