Ethanol-free gasoline...worth it? - Fiat 124 Spider Forum
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post #1 of 34 (permalink) Old 04-12-2019, 04:55 PM Thread Starter
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Ethanol-free gasoline...worth it?

The subject pretty much says it all. Do any of you use ethanol-free gasoline in your cars? I can get it in my area, but only at a few locations and none of them are particularly convenient. Is it beneficial enough that I should make the extra effort to get it as opposed to premium (91+) 10% ethanol gas?

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post #2 of 34 (permalink) Old 04-12-2019, 05:04 PM
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I only use it in my 78 Ferrari as it runs better with the carbs. Cars back then were not built to use ethanol. As to my 124...no way...too expensive and just not needed. I also do not us 91, 89 does a fine job JP
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post #3 of 34 (permalink) Old 04-12-2019, 08:28 PM
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The only benefit you'll get from burning non-ethanol gasoline is about 3% better gas mileage. It's just fuel. It gets burned to make power.


Cars and their fuel systems have been designed around the assumption that the fuel will contain some ethanol for about 40 years. There's nothing there that the ethanol could damage.
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post #4 of 34 (permalink) Old 04-12-2019, 09:19 PM
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I am, nothing but ethanol free. And I cannot give you a single objective, rational reason why. Just makes the car feel something extra special to me, I guess.

That, and growing corn to make a gasoline additive is a net loss proposition. So maybe I'm doing my immeasurable part to spite the ethanol industry.

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post #5 of 34 (permalink) Old 04-12-2019, 09:57 PM
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Not if it means lower octane.
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post #6 of 34 (permalink) Old 04-12-2019, 10:49 PM
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It’s easy to find around here at 93 and 94 octane.
I use it because I hate the idea of using corn to feed cars.
Not to mention it f*cks up my motorcycles.
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post #7 of 34 (permalink) Old 04-13-2019, 12:55 AM
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I’d fill the car up with it if I was planning to store it for any length of time. Otherwise, no.
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post #8 of 34 (permalink) Old 04-13-2019, 05:59 AM
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I use it to run the weed eaters, trimmers, edgers, blowers and all the small 2 and 4 cycle equipment around the farm. It is only 89 Octane in NC, so the spider gets high test which id 93 octane around here. Oh, and the boat gets non ethanol as well. Yamaha prefers it that way
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post #9 of 34 (permalink) Old 04-13-2019, 07:31 AM
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A non-techy article on various plants used for fuel. As soon as we leave corn and move to switchgrass for ethanol, I'll reconsider.
https://interestingengineering.com/s...uel-production

"This plant has the greatest potential to cure our addiction to the use of fossil fuels. Unlike corn, switchgrass has a form of cellulose that uses less energy to convert to ethanol than from processing fossil fuels. Switchgrass's cellulose ethanol contains more energy than corn ethanol. Although there are not currently large plantations of this crop scientists are currently working on methods to exploit this plant in the future.

Researchers at the Auburn University in Alabama have grown test plots of the plant to produce 15 tonnes of biomass per acre. It is believed that each acre of the crop will allow for the production of 4,350 liters of ethanol, every day!"

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post #10 of 34 (permalink) Old 04-13-2019, 07:38 AM
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Doesn’t ethanol effectively increase octane rating?

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