Originally Posted by c1apton
"Z" - the vanos noise is only when you first start up up correct? What weight motor oil are you using? If the noise is a "light ticking" or only when cold - just switching to a heavier weight oil will help. A synthetic or syn - blend will also help. BMW offers a shim kit but it's expensive & labor intense. I'd go the heavier weight oil (especially in your region of the world)
Yes. After long distance drive, the sound will be gone.
After parked it one hour and start it again, the sound will appear again and gone again.
The dealer use Shell Ultra AB, (5W-30
I post this topic at Bimmerwerkz.
Tiggerhapi mentioned solenoid.: dunno: