I had two Passat VR6 and Redline 10W-40 at 8K OCI worked very well for me.
Based on my experience, I agree with the advice to run ARX and then 0W-40 or 5W-40 synthetic.
I'd use Redline 5W-40, Mobil 1 0W-40, Delvac 1 5W-40, Amsoil European Formula 5W-40, perhaps GC 0w30 or Castrol Syntec European Formula 5W-40.