I use Casrtol Syntec 5w-40 in my 96 a6 avant. It is approved for audi use. If you read the back of the bottle it will give all the manufactures that the oil is good for. A Mann or Mahle filter is fine. Dont forget to change the air & cabin filter and the fuel filter as well.

 

Ummm....oil weight and approval are not the same thing. The weight of the oil for use depends on the design of the bears, seals, clearances, temperature and load. I don't want to get into it too much but to save you a little heartache down the road, try to stick to the recommended weights that are in your user's manual.

In a pinch however, any oil is better than no oil and for our engines....30 or 40 weight are the safest.

 

well my manual said to use 0w30 but if you cant find it use 5w30 or 5w40. i always use synthetic , it was a leson learned in my honda after my cylinder walls started pitting. but MY perfered brand is mobil 1 cause its easily available and TO ME reliable. if redline or royal purple wasn't so expensive and hard to find around my way i would use that. the plugs i used were ngk iridiums and they were only 7 bucks a piece, when i first got them for my honda they were like 25 a piece.

 

Mobile 1 is fine.

 

the only reason i say royal purple or redline over m1 is cause i did the stupid finger test and could feel the difference, that doesn't mean under high heat consistent rapid movement it does the same thing.

 

I'm switching to Mobil 1 this weekend. What's the difference between 0w 40 & 5w 40? Does it matter? I live in central Texas, mild winters, hot summers.

 

5w 40 is better then 0w 40 for summer time... if too hot might even go 10w 40 but I don't think it matters that much... =)

 

I use Royal Purple (10W-40 I think?), works greatfor my car. Anyone ever use slick-50 in a 2.7T?

 

Beefski -nicely done with the Josie Wales quote.