Fuel economy, E85 vs 87 gas vs 91/93 high octane gas - Page 3
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Thread: Fuel economy, E85 vs 87 gas vs 91/93 high octane gas

  1. #21
    Junior Member
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    Jan 2017
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    I have been tracking gas mileage for a decade now for different vehicles as I drive a lot. Same with my 200c V6. I have been loving the E85. I'm afraid to say I got hooked. Just my last tank I had to fill 87 octanes as I wasn't near an E85 station and the car felt slower. I don't race my car and rarely go over 3000 rpm. Where I feel the different is on the highway where I can step on it and the car won't upshift on e85 and still accelerate as I anticipate. The last tank however with 87 Oct it felt weaker at lower RPM's. Again, it could be just in the eye of the beer holder but I felt a difference.

    That being said. As gas was going up over the last few months the spread in Central Florida is not a percentage but it seems gas stations price e85 $0.20 lower than 87Oct. regardless how high or low regular gas goes. As prices were reaching 2.50/gal the spread in gas price decreased and led to a higher cost per mile. 3 months ago however it was a bit better.

    I track my mileage with an app now rather than paper and I'm impressed how much data I get from it. I have added a link to some screenshots compiled on a pdf. Check it out. As far as I can tell I'll be running E85 wherever I can even though it costs me 2-3 cents more per mile. Did I mention that I love the smell when I pull into my garage? Not that stinky gas smell but I kinda get a whiff of... Whiskey?


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