I did a search on a bunch of forums, and found many answers about the approved oil for a 2004 Audi S4. However, I also saw many conflicting information. Could someone post a link to some solid info on the VW oil specs? Anything relating specifically to the B6 S4 would be an appreciated bonus.
Thanks

it all depends on where you live and how many miles are on it , most of us use mobil 1 5w30 fully synthetic on our audis. but if you live somewhere where is really cold then you should go with a heavier weight