"Dave Stadt" writes:


Crankcase fumes are sucked into the induction manifold (and burned by
passing through the engine) via the Positive CrankCase Ventilation check
valve.

The question still remains....how does the moisture escape as modern engines
are not vented to the atmosphere but are a closed loop. We aren't talking
about crankcase fumes but about moisture supposedly being boiled off into
the atmosphere.

They most surely are vented. They have an air intake & an exhaust
pipe. The PCV system sucks any *crankcase* fumes into the intake
so as to burn them in the combustion cycle. So as the oil gets hot
and boils the water vapor out, it gets sucked into the intake side...

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