Which one would you choose if you had both easily available? I found a CFN station close by that sells Non Ethanol fuel in 87, 89, and 92 octane. This station is primarily a card lock station for commercial use, but they sell to the public during business hours as they are a distribution center with tanker trucks, and have a full office on site. I normally use Schell 92oct or Chevron 92oct, both with the E10 tag on the pumps. If you could easily choose, which one would you use? The non-top tier/non e10 station, or the top tier with e10 stations? I also use Redline SI-1 system cleaner in maintenance doses....if that makes a difference motor is a 2.4l turbo charged 4cyl making 260hp/285tq at the wheels.