I saw the engine of the Bimmer with VC off for the first time today. (Had VCG replaced due to 1 spark plug well possibly leaking and because the local indie BMW shop had a VCG + Vanos Seals/Anti rattle kit "special" and made use of it, although my car might have been too "young" for VANOS by most standards).
Techs were full of praise of the cleanliness of the engine.
I change oil every 8k - 9k miles, and have used GC (not green), old BC 0w/40, PU 5/40 with Mann or Mahle filters.





