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Which Octane Do You Use?

31810 Views 47 Replies 20 Participants Last post by  E_Net_Rider, 
D
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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BuVille09
NewBu said:
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.
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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.
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BuVille09
NewBu said:
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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Well maybe I do....but not likely. After all we are only about 80 miles apart.
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BuVille09
bballr4567 said:
35 MPG?? At what speeds?
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Oh just cruising down the interstate at 70 to 75 MPH. I failed to mention I got the 6 auto.
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