Condensation under oil cap

[Bdc101]

This week I replaced my CCV with the OEM BMW cold weather replacement as prescribed by the service bulletin.

I had noticed some oil sludge and visible condensation under the oil cap which was why I knew I needed to do the CCV. I've had the car since Aug and most of my trips are short. Now that the weather has cooled off I knew the problem would get worse.

Anyways, I did the CCV and all the hoses, I cleaned all the sludge I could find, which was mostly in the CCV and hoses themselves but also in the air distribution manifold. Put it all back together and drove around for a day, parked in the garage and came back after several hours and found what appeared to be the same amount of pure water condensation, as well as some indication of sludge forming under the valve cover.

Am I missing something or was this supposed to fix that problem? Any help is appreciated since this is supposed to become my DD soon and I can't have it sludging up all winter, every winter.

Oil is less than two months old BTW, Mobil 1 5w-40 euro blend.

Thanks in advance!