Like others have said, stick with the Mann, Mahle, Hengst or Bosch filters. However I'm sure WIX makes one and is good as well. In my '98 M3 I've used a bunch of different oils... never noticed any differences. I've used Lubromoly, Pentosin, CAM2, Rotella T6 and NAPA 5W-40. As well as Rotella T 15W-40.