I'm stock for now, but would rather play it safe and do what the damn owner's manual and gas tank lid says to do..91. It's not worth saving a few cents a gallon to have trouble with a 5-digit $ amount engine..

 

Glad to see someone out there agrees with me. Everyone follows their oil visocsity reccomendations, and other fluids too, but then they want to ignore the recomended fuel usage to save $2.

 

I think it's funny to watch your temperatures rise as y'all read people that disagree w/you. LOL. Chip THIS.

 

Whats even funnier is how people keep reviving these months-old posts today. This ones from Feb, earlier someone revived one from January.

 

I go 89 full tank once a week for me

 

I only use 91-93 Sunoco/BP, whichever the highest at that gas station is.

I drive my car pretty hard at times, and the higher grade runs smoother. And the price difference isnt worth getting the shitty stuff.

Nothing but the best for my car.

 

i usually use 89 octane but my ECU must be older or something because on it the AKI is only 87. but thats just me. btw while i do drive a 96 a4 the build date is in mid 95 so it really has a audi 90 engine and ECU