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Old 04-20-2011, 09:07 AM   #1
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Flex fuel savings ??

My local television station ,had a story about saving money using flex fuels .It was reported that if you fill up at the 1/2 way mark , switching from reg unleaded, to E85 and back . you would still get the mpgs that reg unleaded would give , and save some cash every 1/2 a tank fillup
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Old 04-20-2011, 12:08 PM   #2
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Don't think so. Ethanol has a lower calorific value than gasoline, and I think also has a lower specific gravity. The number of BTUs per gallon will be quite a bit less than gasoline, so you'll get less miles per gallon from the ethanol mixed in your tank, assuming similar combustion efficiency.
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Old 04-20-2011, 05:31 PM   #3
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Flex fuel ??

Seems to me i saw somewhere octane rating for E85 was 100-105. I filled my 2010 F150 with E 85 and got 17mpg at 60 mph.. not too bad..saving about 80 cents a gallon
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Old 04-20-2011, 06:21 PM   #4
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dretired, what kind of mileage do you get with regular 10% ethanol?
There has to be a savings using E85, otherwise there would be no point.
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Old 04-20-2011, 06:29 PM   #5
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flex fuel

crocos, around 18-20 mpg with 10% ethanol
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Old 04-20-2011, 06:39 PM   #6
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Had my local Service Manger at my dealer ship tell me he tried it on his 1500 Silverado and it dropped his mpg 5-6 mpg not much savings in my book.
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Old 04-20-2011, 06:59 PM   #7
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flex fuel savings

When i filled my 2010 Ford f150with E85 the diffrence was 80 cents ($3.05 ) a gallon vs regular unleaded (3.85 ),on the way home i did 55-60 mph and got 17 miles per gallon
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Old 04-20-2011, 07:03 PM   #8
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You can't just run E85 in a normal engine. It has to be rated and set up to run the flex fuels.
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Old 04-20-2011, 07:26 PM   #9
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flex fuel ready

yes, my 2010 F150 is flex fuel ready
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Old 04-20-2011, 08:05 PM   #10
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what would your truck normally get for milage?of it is close to the 17 it might be worth calculating to see if it is worth running E85. I have never run E85 so I have no comparison.
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