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Discussion Starter · #1 · (Edited)
So I'm sure most of us here on this forum know that its hard to find a gas station that sells 100% gasoline now a days, and after doing a little homework, I have come to the conclusion that the 10% ethanol added into our fuels slightly reduces mpg, not to mention a few other things about E10 gasoline such as:

-very strong cleanser and drying agent that can wear down engine parts
- rapidly attracts/absorbs water into gas resulting in shelf life less than 3 months and reduction in octane rating
-decreased fuel efficiency due to lower energy E10 BTU/gal 111,836 vs 100% gas BTU 114,000BTU/Gal(Less available energy means increase in usage)

and the list goes on but then again we'd all be here all day!:cussing:

this information on E10 gasoline can be found on this link :
Fuel Testers-Ethanol Fuel Test Kits-Protect your engines from E10 alcohol blend gasolines.

i commute 70 Miles round trip to work with 95% highway driving at 60mph and approximately 8 miles out of that round trip is on I-95 doing 70mph. I have been averaging 40.2 mpg so far running Shell V-power 93 octane filling up from the same exact pump on a weekly basis. With that said, now im on a mission to see if running 100% gasoline will yield me a better avg mpg than 40.2. I managed to find the one and only local gas station that sells 100% gasoline which happend to be a top-tier gasoline brand (Exxon), a definite plus! I'll start tomorrow and post on going results every night until the following friday of the week. I'm hoping to see some sort of increase, but we'll see!

for those of you who want to find a local 100% distributor, the following links may be of assistance:

Stats about all US cities - real estate, relocation info, house prices, home value estimator, recent sales, cost of living, crime, race, income, photos, education, maps, weather, houses, schools, neighborhoods, and more
Find ethanol free gas near you!
Ethanol-free gas stations in the U.S. and Canada
Ethanol-Free Gas Stations

:eek:ccasion14:

God Bless!
 

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When I lived in Columbia, SC, there was a "100% gas" station 2 miles away. I fueled up there all the time, and definitely did notice better fuel economy. It was not much more than other stations, so the better fuel economy paid the difference.

Around me now it's all E10. I can't get non-E10 gas at any cost.
 

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over here in South Dakota we still have a choice :)

i have the LS 1.8 automatic and i have put in nothing but pure gas 85 octane
just this tank i thought i'd try some E10 87 octane just to see what it would do.
I have seen a signifigant loss in MPG suprising in fact.. so far around 10% lower for all in town driving
 

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I would look around a little more on both sides of the ethanol "fight" before making up your mind though.

1. Ethanol doesn't lower octane, it raises it.
2. Yes, running ethanol will lower MPG as it takes more fuel, but you also have raised the octane and can harness some of the other properties of ethanol, some mpg can be made up in raised timing/boost etc.
3. Ethanol is renewable, Brazil has been running their country since the 70's on ethanol, much higher blend % now.
4. Ethanol does absorb water, reason why the E85 blend in winter is dropped down to a 70% mix depending on month and state you live in. The only difference is you have to use common sense and not let a high % blend of ethanol sit in your car during the winter.
 

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...ethanol: raises OCTANE (resistance to knocking), but lowers BTU (energy content)
 

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Discussion Starter · #10 · (Edited)
Are you under the impression that you need anything higher than 87?
Being that my eco has a force inducted engine, i do care about knocking. So if running the highest octane available can help to reduce that, then i dont mind spending the extra 4 dollars per tank. So to answer your question, by no means am i under the impression that i "need anything higher than 87". It just boils down to personal preference since spending 4 dollars extra is a far cry from putting me out of house and home.

On another note, by experimenting with Exxon 100% gas 89, i was able to squeeze an increased average of 42mpg from 40.2 in one work week. Take it for what its worth. I'd love to see other members results on 100% gasoline as well.
 

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Being that my eco has a force inducted engine, i do care about knocking. So if running the highest octane available can help to reduce that, then i dont mind spending the extra 4 dollars per tank. So to answer your question, by no means am i under the impression that i "need anything higher than 87". It just boils down to personal preference since spending 4 dollars extra is a far cry from putting me out of house and home.

On another note, by experimenting with Exxon 100% gas 89, i was able to squeeze an increased average of 42mpg from 40.2 in one work week. Take it for what its worth. I'd love to see other members results on 100% gasoline as well.
ethanol always lowers your fuel economy, but there are performance benefits i guess (at least on e85 there are)
 
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