I have a 2000 A4 with the same 30V 2.8L. I've been using M1 0W-40 for the last 30k miles or so. Early on it seemed to use a fair amount of oil, but now with 50k on it, it only uses maybe a quart during my 8k/1yr OCI. My owner's manual says to use 5W-40, and only use 5W-30 if you can't find...