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Which Octane Do You Use?

31808 Views 47 Replies 20 Participants Last post by  E_Net_Rider
I have a 4 cyl, A6 2010 LTZ with less than 5000 miles on it. I just pumped some Shell 89 octane in it today. Thought I'd give it a try to see if I can tell any difference in MPG or performance. What do you folks like?
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I run 87 octane. Never had an issue. I have the 4 cylinder with 35,000 miles. I do run non-ethanol gas though. Here in Oklahoma you can find ethanol and non-ethanol "Real gas" as most stations call it. The car does run much better on the non-ethanol "Real gas" and the mileage is better as well.
I have to disagree with you on the better mileage with non-ethanol gas. I use ethanol gas all the time and I get on average 35 MPG. Also the 4 banger runs just fine on ethanol.
So you disagree that my car runs better on the non-ethanol gas? Have you been driving my car??? If so.....then you owe me gas money.
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