View Full Version : Ethanol gas

03-10-08, 08:07 PM
I just noticed the local gas station (QT) has posted stickers indicating the fuel is now 10% Ethanol. Does anyone know of any ill effects on the engine?

03-10-08, 09:23 PM
Fuel requirements are by octane, not by additives........I have no idea. There hasn't been anything supplemental that I"ve read on the subject.

03-11-08, 08:33 AM
I know the cars that run E85 have different fuel lines as the Ethanol is more corrosive than Octane.

03-11-08, 08:43 AM
You got me there. I never knew fuel had any corrosive components. Although I don't know what E85 is, I do know that octane isn't a chemical or component of fuel, it's a measurement, as the definition below so describes.

The octane rating of a spark ignition engine fuel is the knock resistance (anti-knock rating) compared to a mixture of iso-octane (2,2,4-trimethylpentane, an isomer of octane) and n-heptane. By definition, isooctane is assigned an octane rating of 100 and heptane is assigned an octane rating of zero. An 87-octane gasoline, for example, possesses the same anti-knock rating of a mixture of 87% (by volume) iso-octane and 13% (by volume) n-heptane. This does not mean, however, that the gasoline actually contains these hydrocarbons in these proportions. It simply means that it has the same autoignition resistance as the described mixture.

03-11-08, 03:43 PM
Louis, do you think of these figures at night or do you have a photographic memory?:ack:

03-11-08, 04:33 PM
You amaze me too Louis. Now put down the encyclopedia and get back to work.:rofl:

03-11-08, 05:58 PM
No, I don't come up with any figures..........I read them. Then, if people here are a lookin, then I'm a postin......
The below paragraph is just that, the definition of octane from the dictionary. I still don't know what the "E85" means though.......

03-11-08, 08:49 PM
[QUOTE=seadoosnipe;8210]You got me there. I never knew fuel had any corrosive components. Although I don't know what E85 is, I do know that octane isn't a chemical or component of fuel, it's a measurement, as the definition below so describes.

E85 is the reason for the price of corn going thru the roof, which means beef prices going higher...

03-11-08, 09:07 PM
I beleive the E85 is the formula mix of the fuel (Ethanal 85) which is a special blend, but I don't have the information at hand. I will check it out as I had an artical at work that went into detail about the "special blend". I think GMC introduced it as their vehicles engines are ready for the "special blend".

03-11-08, 09:35 PM
E85 refers to 85% Ethanol. It is very common in Brasil and many Ford products have sensors in the fuel tanks that allow the computer to change spark timing. (You can recognize it by the little leaf coming out of the road symbol.) GM made a big deal of there cars being compatible, but in south america they have them everywhere.

Wikipedia reference:
Several of the outstanding ethanol fuel issues are linked specifically to fuel systems. Fuels with more than 10% ethanol are not compatible with non E85-ready fuel system components and may cause corrosion of ferrous components.Ethanol fuel can negatively affect electric fuel pumps by increasing internal wear and undesirable spark generation is not compatible with capacitance fuel level gauging indicators and may cause erroneous fuel quantity indications in vehicles that employ that system and is not always compatible with marine craft, especially those that use fiberglass tanks.

03-12-08, 09:26 AM
Then the way I see it, that stuff is just bad.......no matter how you slice it. I don't think we have that stuff here, lest I've never seen it advertised at any of the petrol stations I visit..........:ack:

03-12-08, 06:01 PM
Just another gimmick to get the petrol companies richer...

03-12-08, 08:58 PM
As if they weren't already rich enough. I wonder, if they ever invent a machine that is capable of perpetual motion, will the oil companies go out of business? I bet the U.S. patent office won't patent it!....The entire economy would go bust from the loss of revenues......

03-19-08, 12:10 AM
Unfortunately, E85 is only around 75% the energy of regular gasoline, i.e. it burns more gasoline to make the same amount of horsepower as gas. I converted my fiancee's Mustang to run off gasoline, E85, or pure alcohol. The fuel lines on most cars made after 1985 will allow alcohol, but I don't know about PWCs as the technology is more advanced in most cars than PWCs.