Actually, you can use a wide and ever expanding choice of oils. (5w40's
Castrol, Motul, Total, Mobil One @ least 4 products, Fuchs, Amsoil, Redline, Rotella, etc,. I am sure I have left out some favs.
I have and continue to use Delvac One 5w40 (aka Mobil One 5w40 TDT). The oem filters and the vendors that do the oem filters; like Mann, Bosch, Hengst, etc., are all specified (made to go) to 50,000 kms (converts to 31,069 miles).
Since the conversion from LSD to ULSD (Oct 2006), I have been running 25,000 miles OCI's. My last one was 30,700 miles. @ 154,000 miles this thing runs like the proverbial top.