I have learned a little bit about gas. If your gas has ethanol in it, it is not very stable at all. In fact, it can go bad in three months or less. I bought a new BMW motorcycle last winter. It sat for half a winter in a heated garage. When I started to run it in the spring, it quit and would not start. The dealership blamed the ethanol in the fuel and replaced the injectors under warranty. (lots of info on Ethanol on the web, from producing lots of water in the fuel to breaking down interiors of some fuel tanks) They recommended a product called Startron. A marine engine company did a comparison of all the fuel/ethanol stabilizers and Startron was the best, followed by the new Sta-bil for fuel with Ethanol (not the regular Sta-Bil that we have all used for years). I like the Startron because it uses a small amount per gallon of gas. I have had no problems with my motorcycles since I started adding Startron when I know they are going to sit. I even put it in my Honda generator. Interesting, when the BMW injectors were plugged the dealership had to test the fuel in the tank to make sure the ethanol was at 10% or less to get it covered under warranty. I wonder what will happen now that our congress has passed E15 which allows for 15% ethanol in the fuel instead of the E10 which we have had for a few years now. I've read a lot about Ethanol and it is just crap. It may reduce our dependence on foreign oil a bit, but most car and truck owners have noticed a drop in fuel mileage that more than offsets the gas we get from corn. It has raised the price of corn which has hurt the world food supply.
My thoughts would be to take ethanol out of regular and premium fuel altogether and turn the mid grade tank at gas stations into E85 gas for vehicles that run on flex fuels (few people use the mid grade anymore). This would allow engines that hate ethanol to run on ethanol free gas and flex fuel vehicles can run on 85% ethanol.
For those interested, there is a web site that prints the gas stations in every state that sell ethanol free gas. I think it is www.pure-gas.org