Increase in Ethanol?

yup. 10% is BS. In CT I can fill at different stations and smell the difference, and my Neon can gain or lose 2mpg depending only on the location I fill at. I now will only use Mobil or Shell. Any of the smaller places, citgos, Valaro, BP, whatever is all trash. It's eaten the fuel system in my tractor and killed a lawn mower. I'm now using older stuff that I can manually tune the mixtures on and it's ok. I'm positive there are some places at 15% already.