[Palf70Step]

As mentioned it takes more ethanol to make the same amount of energy as non-ethanol fuel. I was told this many, many years ago and it seems to hold true. 10% ethanol will be a drop in MPG of 10%, back when it was 5% it was a 5% drop. I have only run across the 15% once or twice and the rule seems to hold true on that. I doubt E85 follows that rule. I try and run non-ethanol in my trucks, but when I am out of town they get what I find. Every time I put in the E10, I loose about 2 mpg. After running a couple tanks on non-ethanol I see my highway MPG back up to 18, on e10 its 16ish. I am not sure that the damage to rubber parts and all are as bad on the newer stuff as they changed the materials, but on my 60s-90s stuff it does seem to tear up carb gaskets, hoses and corrode the aluminum parts bad. Since it is so humid down here already, I don't need any help with moisture build up in the tank. My wife uses the E10 all the time in her 2011 Honda with no issues, other that the MPG difference.