I thought about this the other day at a station that has 87, 89, 93, 104E85, and 87 Ethanol free. My question is, which has more potential, the 87 with no ethanol or the 93 with a questionable amount of ethanol in it. I only as seeing as the nonethanol isn't watered down like the rest of the gas we get. Curious to hear some of the gas/oil guru's asnwer this one