91 ethanol free or 92 octane?

Bdubbs

u even lift bro?
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I've been running 92 octane in my car for the last 5 years or so. There is one local station that has 91 ethanol free fuel. Should I consider running that instead? Assuming I can keep my tune the same? Thank you!
 

Tron84

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I wouldn't. It's still lower octane. You won't see any gains for the extra money.
I still do use the non ethanol fuel for when I store the car for the winter tough, no ethanol to absorb moisture.
 

Bdubbs

u even lift bro?
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I wouldn't. It's still lower octane. You won't see any gains for the extra money.
I still do use the non ethanol fuel for when I store the car for the winter tough, no ethanol to absorb moisture.

I was told it's actually 91.9 octane, but sometimes it test as high as 92.5. So they have to call it 91. I'll likely stick with 92 until I can go e85.
 

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