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      12-27-2012, 01:59 PM   #45
Freon
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Quote:
Originally Posted by m7ammed View Post
Sorry to sound dumb, but one would think BMW would have installed an oil catch can if it would have helped with this? Is there any other reason why BMW never installed something like this?
Slow down. We have yet to prove in a controlled test that Brand A or Brand B oil catch can eliminates the problem.
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      12-27-2012, 02:12 PM   #46
Fed P
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Quote:
Originally Posted by Freon View Post
Slow down. We have yet to prove in a controlled test that Brand A or Brand B oil catch can eliminates the problem.
Don't we all agree that it helps at least to some extent though? 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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      12-29-2012, 01:05 AM   #47
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Quote:
Originally Posted by Fed P View Post
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.
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.
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      12-29-2012, 09:53 AM   #48
mike the snake
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Even with a catch can, the crankcase ventilation vapor still goes exactly where it went before, just with some/most of the oil being condensed back into liquid form, and then hopefully properly disposed of.
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      12-29-2012, 12:45 PM   #49
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Exactly, we are not throwing it into the atmosphere with a catch can, so I don't see the logic in that argument.
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      12-29-2012, 01:55 PM   #50
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The best way to deal with CC pressure is to route it into the exhaust stream to be drawn out... but that's not exactly EPA friendly.
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