10% Ethanol vs. Ethanol Free Gas

Originally Posted by LMBmikeZ Not the case over here in Ontario, we get 91 octane ethanol free from Shell. That's all I have ever used in my 370z, my Z32

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10% Ethanol vs. Ethanol Free Gas

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11-25-2012, 11:01 AM

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Zat_Zuma

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Quote:

Originally Posted by LMBmikeZ

Not the case over here in Ontario, we get 91 octane ethanol free from Shell.

That's all I have ever used in my 370z, my Z32 was tuned for 94 octane so that's all I used in it.

I also remember reading articles talking about ethanol fuel lowering gas mileage, very little amount but still less.

My little research showed that 5% ethanol gave 5% less gas mileage and 10% was 10% less mileage.

Worked out to 2.5 mpg on the Challenger on 91 octane fuel with 10% ethanol. Same price as Shell 91 and 10% better gas mileage........ no brainer for me which fuel to buy.

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