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Old 12-10-2012, 07:46 PM
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Ethanol-Free Gasoline

This is a re-post of some information that I found when replying to another thread, and thought it might be worthy of it's own thread.

Here in Alberta (as well as in a few other Canadian provinces) most PREMIUM fuel (91 or 92 octane) contains no ethanol. Regular and Mid-Grade gasolines do.
(This site lists locations by US state as well.)

Further reading (quote below) says that ethanol is a big "no-no" in a marine environment as well as in 2-cycle engines in general.

Ethanol Free Premium Coalition New York Is Not A Mandatory E10 State


Prohibit Ethanol Blending In All Premium Unleaded Gasoline

Every mandatory E10 state has exemptions to their blending law, because there are a number of piston engine applications that should not, and some that cannot, use ethanol blended gasoline. Unfortunately the exemptions are not uniform. They vary from only one exemption in Washington, aircraft, to a universal exemption of premium unleaded in Missouri. All states exempt aircraft usage, but most states like Oregon and Washington make it almost impossible to get unblended gasoline. Oregon is the only state that allows for unblended regular and premium gasoline for the exemptions, and then makes it almost impossible to get any unblended gasoline. All other mandatory ethanol states just allow clear premium unleaded gasoline for the exempted classes.

The following piston engine applications should not use ethanol blended gasoline:
■ Any 2 cycle engine used in tools, watercraft, snowmobiles, etc., or small 4 cycle engines.
■ Any engines used in an emergency stationary engine application like a generator or a pump, especially in a humid climate.
■ All watercraft. Ethanol blended gasoline should never be used in a marine environment.
■ Antique and classic cars and classic motorcycles.
■ All aircraft.
All of these users must be able to get ethanol free (E0) gasoline. If you live in a state without a mandatory ethanol blending law, you have no exemptions, ethanol will eventually be blended into all of your unleaded gasoline and there is no requirement in EISA 2007 to label gas pumps with ethanol content.
Also worthy of mention while on the topic of high-octane fuel is that NGK says premium fuel might be hard on sparkplugs. I wonder if that statement was made prior to ethanol blending?

High Octane > Problem Solver or Problem Creator?
If OEM vehicle/engine specifications state the use of high octane, or specify an octane level rating to use, this must be complied with to prevent engine component damage. The use of lower octane than recommended can cause detonation and engine damage. The use of higher than recommended can cause fouling problems, even more so in the cooler climates.

The reason for this is the higher the octane the slower the burn rate which either cools or heats the combustion chamber outside of OEM specifications. This can be especially prevalent in cold climates or 2 stroke applications where the use of the incorrect fuel leads to a high failure rate on spark plugs! Always comply with the specified fuel rating for your vehicle.

Note: Premium fuel is considered 91 or 92 by OEM

All of this mumbo-jumbo comes to one thing.
I can see the day coming where the only place we can buy ethanol-free gasoline will be your local airport (or an av-gas distributor)

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Old 12-11-2012, 07:32 AM
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Last week I saw where the EPA's already talking about using E15 here.
Knowing full well it will void most car warranties.
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Old 12-11-2012, 08:40 AM
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Originally Posted by SSedan64 View Post
Last week I saw where the EPA's already talking about using E15 here.
Knowing full well it will void most car warranties.
yup easyest way to get older cars off the road..
thats all the epa cares about..
cares from 2010 back are gonna be as worthless as bigblocks cars where in the 70's gas crunch
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Old 12-11-2012, 10:20 AM
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Well - looks like my '31 and my truck struggle along with E-10 as the closest booze free gas is about 25 miles. Dam' - and that truck gets about 1.5 mpg better with 'pure' stuff. New, 11.5mpg, with ethanol, around 10mpg local driving (14 open road). The '31 - who cares, it's hobby car with a late 5.0 and an OF driver with a heavy right foot that loves to hear it run - hard.

Not going to get into the blindly dumb politics, but this is not ecologically or economically a good solution to dwindling oil resources. All the production of ethanol does is transfer energy waste from one source to another (which of course uses mostly oil or natural gas to do the production).

OK - the soap box is back on the shelf
Dave W
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