All i can hear is the Vanos rattle. Is that the noise you are hearing?
Seriously - you motor sounds fine to me. Maybe the noise is worse than the video reveals, but with DOHC there is always going to be a little bit of valve train noise, especially with higher lift/duration cams. My DOHC LT5 with long duration cams on both cams sounds very similar to my S62.ah... so thats the dreaded vanos rattle. niiiiiiiiiice. it's an '02 if you are wondering.
I don't have vanos, but my car and most other e39's V8's are plagued with that same noise. I am using 10w-40 Mobil 1 High Mileage Full Synthetic and my car is only 25% as noisy as before I used it. I change my oil twice in a service interval so there is no need for the LL oil. I am not sure if anyone makes a high mileage 10W-60 oil, but if they do I would give that a try.ah... so thats the dreaded vanos rattle. niiiiiiiiiice. it's an '02 if you are wondering.