What % Of Alcohol Does Your State Have?

There may be something to the spiking mentioned above. I have a flex fuel truck, which has the ability to monitor alcohol content in fuel. I do occasionally check to see how much a tankful contains. I live in a E-10 state (E-85 is sold in separate pumps). The worst I've seen is 16.5% from a Sam's Club station, which gets their gas from Flying J/Pilot marked tanker trucks. From most other stations I read 9.8%. I did discuss this with a tanker truck driver, and he said it is possible that the last tankfull was E-85, and the driver didn't dump it all, refueled with E-10 and got a higher alcohol content.