BMW 650i E63 - Oil Filler Cap

[Suresurf]

My car appears to have oil weeping from the oil filler cap.

I’m suspecting something to do with CCV? Anyone else had this problem and diagnosed / fixed.

I noticed oil dripping from AC compressor which is below this point when I gave the car an oil change last.

Any help appreciated.

[d_a_n1979]

With the car running; remove the oil filler cap and see if it creates a vacuum on your hand

A slight vacuum is fine, but if it’s really pulling on your hand, it’s the CCV bad needs replacing

However; the oil filler caps have a small rubber seal, if this is split at all, it’ll seep oil, so check that too