Originally Posted By: 440Magnum
1) Its inexpensive
2) It's non-toxic
3) It works.
Don't get me wrong, I don't like the focus on ethanol alone, which is corn-lobby driven. But alcohos (be it Methanol or Ethanol) are EXCELLENT fuel additives. Great octane boost, keep water out of the system, and once a few materials are changed in the fuel system, harmless to the vehicle. Yes, mileage goes down, but I prefer that to poorer octane boost or high toxicity from other alternative octane boosters. MTBE worked well, but was highly toxic and highly damaging to ground-water.
All the hate for ethanol is not based on science or engineering. Its based on people wrongly believing they are paying more for it or somehow getting less performance from it when in fact it provides the best cost/benefit of the available chemicals. Butanol might be better, so I'm not saying we shouldn't keep exploring options, but ethanol free gas is usually lower octane than E10 premium or else substantially more expensive (often both!).
Your fuel system get much more corrosion with ethanol in the tank, plus it uses more energy (corn) in USA to make ethanol than it gets back, so what is the point? We are not in Brazil (sugar cane) and we shouldn't use a Brazilian fuel spec.