ethanol vs non ethanol gasoline poll
#1
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ethanol vs non ethanol gasoline poll
If you had your choice to use 91 octane non-ethanol gas or 93 octane valvetech ethanol gas (lots of additives apparently to break up ethanol) what would you use?
Thanks
Thanks
#2
Platinum Member
Platinum Member
91
My 2001 Chevy Dually with the 496 went from 10mpg towing down to 7mpg with the stupid ethanol and other crap they add to the gas! How is it environmentally friendly to burn more fuel!!!!
My 2001 Chevy Dually with the 496 went from 10mpg towing down to 7mpg with the stupid ethanol and other crap they add to the gas! How is it environmentally friendly to burn more fuel!!!!
#4
Charter Member # 55
Charter Member
I'm surprised at that. I had a 496 in 2001 2500hd and ran E-10 95% of the time. I got about 11mpg in town and 13mpg hwy. Towing 8-10k was always 7-8mpg. I never saw a diffference running non ethanol fuel.
#6
Platinum Member
Platinum Member
It was over this winter and I believe the gas was the oxygenated winter blend as well. Whatever the case, when I bought my 38 Donzi in '07 and towed it up to NJ from Fla., I got just under 10mpg. In Feb. '10, I got barely 7!!!!!!
My truck has the re-chipped computer with cold air intake and free-flow exhaust and that is why I used to see 10 towing no problem.
My truck has the re-chipped computer with cold air intake and free-flow exhaust and that is why I used to see 10 towing no problem.
#8
Gold Member
Gold Member
You should expect lower MPG with (90% gas/10% ethanol) than with 'pure' gasoline, and here is why:
Gasoline is a saturated hydrocarbon, with a fixed amount of energy, in each gallon.
91 octane gasoline has an energy density of 44.8MJ/kg
energy density = amount of energy stored (available) in a given volume or given mass
MJ = megajoule
kg = kilogram
So 1 gallon of 91 octane, 'pure' gasoline is 125,000BTU
Ethanol is an octane booster, and does not contain the same amount of energy as gasoline.
Ethanol, which is rated at 129 octane, contains 84,600 BTUs per gallon.
So to get 91 octane blends of 90% gas, and 10% ethanol, they can and do use lower octane gas in the blend.
10% Ethanol + 90% lower octane gasoline, resulting an 91 octane rating blend, if you do the math, contains around 112,000BTUs per gallon.
Bottom line, to do the work of 1 gallon of 'real' gas, you need to burn 1.12 gallons of gas/ethanol blend.
In other words, 12% more gas/ethanol blend to go as far.
I bet you the 'tree huggers' didn't share this info with you. Not as "green" as advertised!
Gasoline is a saturated hydrocarbon, with a fixed amount of energy, in each gallon.
91 octane gasoline has an energy density of 44.8MJ/kg
energy density = amount of energy stored (available) in a given volume or given mass
MJ = megajoule
kg = kilogram
So 1 gallon of 91 octane, 'pure' gasoline is 125,000BTU
Ethanol is an octane booster, and does not contain the same amount of energy as gasoline.
Ethanol, which is rated at 129 octane, contains 84,600 BTUs per gallon.
So to get 91 octane blends of 90% gas, and 10% ethanol, they can and do use lower octane gas in the blend.
10% Ethanol + 90% lower octane gasoline, resulting an 91 octane rating blend, if you do the math, contains around 112,000BTUs per gallon.
Bottom line, to do the work of 1 gallon of 'real' gas, you need to burn 1.12 gallons of gas/ethanol blend.
In other words, 12% more gas/ethanol blend to go as far.
I bet you the 'tree huggers' didn't share this info with you. Not as "green" as advertised!
Last edited by AppSysCons; 07-14-2010 at 08:35 AM.
#9
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Guess I should fatten up my jetting about 10 % ?
You should expect lower MPG with (90% gas/10% ethanol) than with 'pure' gasoline, and here is why:
Gasoline is a saturated hydrocarbon, with a fixed amount of energy, in each gallon.
91 octane gasoline has an energy density of 44.8MJ/kg
energy density = amount of energy stored (available) in a given volume or given mass
MJ = megajoule
kg = kilogram
So 1 gallon of 91 octane, 'pure' gasoline is 125,000BTU
Ethanol is an octane booster, and does not contain the same amount of energy as gasoline.
Ethanol, which is rated at 129 octane, contains 84,600 BTUs per gallon.
So to get 91 octane blends of 90% gas, and 10% ethanol, they can and do use lower octane gas in the blend.
10% Ethanol + 90% lower octane gasoline, resulting an 91 octane rating blend, if you do the math, contains around 112,000BTUs per gallon.
Bottom line, to do the work of 1 gallon of 'real' gas, you need to burn 1.12 gallons of gas/ethanol blend.
In other works, 12% more gas/ethanol blend to go as far.
I bet you the 'tree huggers' didn't share this info with you. Not as "green" as advertised!
Gasoline is a saturated hydrocarbon, with a fixed amount of energy, in each gallon.
91 octane gasoline has an energy density of 44.8MJ/kg
energy density = amount of energy stored (available) in a given volume or given mass
MJ = megajoule
kg = kilogram
So 1 gallon of 91 octane, 'pure' gasoline is 125,000BTU
Ethanol is an octane booster, and does not contain the same amount of energy as gasoline.
Ethanol, which is rated at 129 octane, contains 84,600 BTUs per gallon.
So to get 91 octane blends of 90% gas, and 10% ethanol, they can and do use lower octane gas in the blend.
10% Ethanol + 90% lower octane gasoline, resulting an 91 octane rating blend, if you do the math, contains around 112,000BTUs per gallon.
Bottom line, to do the work of 1 gallon of 'real' gas, you need to burn 1.12 gallons of gas/ethanol blend.
In other works, 12% more gas/ethanol blend to go as far.
I bet you the 'tree huggers' didn't share this info with you. Not as "green" as advertised!
#10
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Always go with straight gas if possible, but in the midwest it is vertualy not a option, the green people have drank the "coolaid" many years ago. they first started with mtbe and it took a long time to find out that it poluted the water system ( it does not evaporate). Etheanol is there current panacea, as filler we use more fuel per mile. (it is also rough on seals, fiberglass and rubber products) it is bad for marine applications, but we have worked around it here. the not so funny part is that they now charge more for less now!