Jaypete1, your Hungarian friend is correct. The use of non-OEM filters ABSOLUTELY causes this cold-start metal-on-metal contact for the first 10 seconds or so which results in the noise you've described. I've posted on this before, it's simply not worth any monetary savings by going with non-BMW branded oil filters. I also recommend BMW-only fluids for the cooling system and transmission at a minimum. Good luck!

Hey Dygital - you stole my favorite picture that I use as my desktop background ;-)