QUOTE (W201 sweden @ Oct 3 2009, 04:39 AM)

There are more "myths" about the ethanol fuel than about the Loch Ness monster, it seems...
Solvent?
Can you please explain what you mean? Gasoline is no less agressive than ethanol. Have you tried filling one of those flims disposable drinking cups with gasoline. It will quickly dissolve and "melt". Try to do the same but using ethanol, and the cup will be fine...
They have different properties, but you can't really say that ethanol is more "aggressive".
And that article is not correct. "Retains water"? They seem not to understand even basic chemistry.
Gasoline in non-polar, water is polar and the ethanol molecule has one end that is polar and one end that is not.
That is why it is common to pour some ethanol in the gasoline during winter, to bind any "free" water in the fuel system that might otherwise freeze in the carburator nozzles.
The resin/gum that gets dissolved is the result of many years of gasoline use. Filling ethanol in the tank will clean it and restore it to it's original condition - resin-free.
Fiberglass tanks are not used for cars.
I (and many others...) have used 85% ethanol fuel for years in my cars without any material related problems.
To my knowledge, cork and shellac are the only car related materials that will not work ok with ethanol. You rarely find either of them in the fuel system of any car newer than 1970 or so.
QUOTE
Joe Rutigliano of Joe's Service Center in Avon Park has seen increased complaints about "check engine" lights. Most involve the car's sensors not being able to measure oxygen correctly, which he says has to do with how rapidly ethanol burns.
Also false. The oxygen sensor does not know and does not care what fuel is used - it measures the oxygen level. If the CE light comes on, it is probably because the engine runs too lean on ethanol. To achieve correct stochiometric ratio you need about 30% extra fuel to run at lambda 1. That is outside the regulation system parameters on many angine management systems. Bigger injectors or higher fuel pressure is the cure.
/Alexander
That's why some cars in the US are "flex fuel" and some are not. As for my preferences I will use gas with no ethanol as long as I can find it. Ethanol has more connotations here than just it's performance in engines. It's a big waste and boondoggle of taxpayer money going to subsidize corn raised for fuel and not for food. Added problem is the higher cost per btu, lower fuel mileage, and crops diverted to ethanol causing food prices to increase. It's bad for the American consumer all the way around. Most of us just don't like it as it is not a cost effective way to achieve the nebulous goals for which it is intended.
http://www.electrochem.org/meetings/schedu...ts/214/1695.pdfQUOTE
E15 - the fuel standard proposed by a consortium of corn-growing states - would likely not be safe for use. Ethanol is quite corrosive, and in order to create a vehicle that can safely use the substance, automakers have to design specialized fuel systems (e.g. tanks, lines, pumps, injectors, etc.) designed to resist the alcohol. Although a number of cars today are "flex fuel capable" and can run up to E85 blends, many - especially older vehicles - are not. Using such fuels in vehicles incapable of handling them can cause extensive, expensive damage.
http://rumors.automobilemag.com/6588984/gr...tent/index.htmlIf E15 is a problem for non flex fuel cars, then E85 will certainly be a disaster for them. Whether you use the term "aggressive" or "corrosive" the auto parts don't know the semantic difference and the results will be similar.
It's not that the ethanol binds to the water, it's that ethanol actually dissolves in water, and there is part of the problem. The car either has to be built with different or coated fuel system parts and/or expensive corrosion inhibitors must be added to the fuel. Any way you slice it, it all ends up with higher costs for little reduction in emissions.
Remember MBPE? It was supposed to be the ultimate solution for a fuel supplement. It turned out to be toxic and ended up in the ground water of various regions. So much for the environment.
The only best reason 100% ethanol works for Brazil is that sugar cane is abundant and yields more BTU per dollar than most other bio fuels. That allows them to use cars that are made to run on ethanol and not be dependent on oil. More power to them.