Bimmerfest - BMW Forums - View Single Post - How to test, clean, & redesign the original BMW dipstick guide tube (CCV vent clogs!)
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Old 06-03-2012, 04:12 PM
timarnold timarnold is offline
Location: Maryland
Join Date: Sep 2009
Posts: 932
Mein Auto: 2003 bmw 525i, 2005 X3
Short term, there really isn't a problem. You probably will lose some crankcase vacuum & potentially, some oil could slosh out of the hole, but I kind of doubt it. With the right o-ring, it is really hard to push the dipstick in & get it fully seated without cutting the o-ring. I used some AC o-ring lube called "Nylog" and it popped in pretty easily. When it it fully seats, you will feel a definite pop.
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