I'm lucky enough to be far enough south that the blend never changes here. I bought a e85 Quickfuel 1050 4500 at the beginning of last season. I switch it back and fourth between my small block Dart and big block Challenger. I have figured out the jetting for both and will just pull it off one car and rejet it and put it on the other car. I won the Footbrake Championship at one of the toughest tracks to win at on e85 last year. I race multiple classes every weekend and was going through four barrels of 110 a season. I don't use much more e85 than I did of 110. I love the stuff! I've had one motor apart that has run on it and everything looked great inside it. It can get a little stubborn to start in cold weather but once you get some heat in the motor it will start like normal from then on.