Quote:
Originally Posted by Fed P
With that in mind, I would agree with the other poster that it's a matter of cost vs benefit that BMW decided did not make catch cans worth it.
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I don't agree. Crankcase ventilation systems are meant for emissions purposes. Crankcase vapor contains hydrocarbons which have to be vented back into the engine to be burned, not released into the atmosphere. Just like fuel tank vapor has to be contained with the charcoal canister and burned when the engine is running.