What is valid is that if the separator is frozen closed, then removing the oil filer cap will show you that there is pressure building up. The Chewbaca noise is optional. On the other hand, if it freezes open, then there will be no noise or pressure, but on high vacuum, ie when lifting the throttle, it can draw oil from the sump into the intake tract, potentially leading to a hydraulic lock and major engine damage. So the video is very incomplete, IMO.

And if you drive it as it was designed, ie limit the short trips and make sure it gets hot and stays there, you won't have a problem as you will boil off the condensation and not get a buildup of the paste.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
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