Heres a Tip: CCV and "Mayo" ; contains a secret tip

[1MEAN4.8IS]

I have pretty good experience with this,

Many of you out there are complaining of opening your oil fill caps and seeing some "mayo" or moisture build up on the cap and in the immediate area of the fill hole in the valve cover, truth is if you see that chances are the rest of your ccv system is already under siege from the yellow mayo!
ive seen many-a-thread addressing this problem but I have yet to see the complete outlined solution with the help tip that I have.

Specifically those of you with M54B30 engines or 3.0i
what to do if you see this yellow mayo?
- It would be best to start off with checking the hose at the front of the valve cover that runs behind your oil filter housing, its not very hard to take loose but I do caution you it can be very brittle and break easily. check there in towards the valve cover and the opposite direction down the tube, do you see more mayo? is it almost clogged?
-If you can answer yes to that then you most definitely will want to do something about it, not fixing this problem can lead even up to engine failure and hydro-locking.
with that said checking your ccv for clogs an finding them means replacement will most likely be your option, now many threads exist on replacing the CCV and associated hoses, but some don't contain the fact that the real cause can be the dipstick, the updated part from bmw is required as a major change in the way the ccv drains back to the oil pan has been made.
To rid your x of mayo:
-Replace oil separator and associated hoses
-Be sure to get or check if you have the updated oil dip stick
-Remove your valve cover clean it out as best as possible and replace the gasket
,and now for the tip to keep this from getting so bad! once cleaned out of course

temperatures: 37 degrees F or below
TIP: be sure if you live in a mild to cold climate to warm up your vehicle before driving (especially if you drive a short distance aka 1-15 miles) make sure your x gets up to operating temperature on those cold wintery days. be sure to get it up to temperature and keep driving for at least 10 minutes or more if possible, this means doing anything you can to keep driving, explore your area go somewhere you haven't been or do a hot lap around your local highways try to do this at least once a week. so if that means your engine gets to operating temperature just as you reach your destination, warm it up for 10 minutes!

SECRET TIP: really want to keep your CCV clean? at least once a month, go out in your x and get it nice n hot! this is best to do after a long trip or if you prefer you can go out and beat it up a little around town (within legal speed limits of course) be sure that it is at operating temperature and has been for a while remember nice n hot! once your need for speed or long trip is done once you park your x; open the hood and remove your oil filler cap, and watch the moisture evaporate! leave it off for a while (till its almost cooled down entirely) then re-install oil cap and follow the tip for keeping ccv clean!