At a recent conference the speakerâ€™s term used was Phase Out. He stated that fuels with ethanol phases out quicker and should be used within a matter of weeks. He did not go in to detail as to what happens with the fuel.
At my place of work we stopped using fuels with ethanol a couple of years ago due to issues with our small gas engines not running properly. They ran rough, had to choke them longer than normal, and often they just would not start at all. We made the switch to ethanol free fuel and ever since we made the change we have had zero problems. This is the fuel we are using now:
Personally I think SEF is overpriced for home use but not for the equipment we use it in at work.
For home use I buy ethanol free pump gas. There are websites to help find ethanol free gas pump, one is: http://pure-gas.org
Here are some reason I do not use fuel with ethanol besides the before mention reason.
Here in the Pacific Northwest in the winter we have a lot of moisture around. In the air, on the ground, in our fuel tanks, itâ€™s everywhere. With my Honda mower I often I find water sitting in the bottom of fuel tank. So if I had used say E10 fuel in the Honda mower, the ethanol would have absorbed water and then at some point made its way in to the engine. This phase separated fuel could then sit in the bottom of the float bowl and start corroding away destroying the carburetor, or just sit in the bottom of the fuel tank corroding the tank.
Another reason is when the phase separated fuel runs through a two stroke engine a mixture of ethanol and water with no gasoline and no lubricating oil will be ran through the engine.
Another is ethanol can dissolve varnish and gum deposits that have previously formed inside fuel storage cans or engines, and the deposit can plug small opens in the carburetor.
The cost of ethanol free fuel is only about 20 cents more a gallon. So that is a dollar more for five gallons.
Okay here is my math test:
My planes have 16 oz fuel tanks,
5 gallon is 640oz
640oz divided by 16 =40.
$1 in extra cost for the good stuff divided by 40 = .025
So if my math is right, the cost is two and a half cents more per tank for the Ethanol free fuel.
I think I will spurge and spend the extra cash on ethanol free fuel.
Oh more thing. I rather eat a corn feed cow than a corn feed chevy.