My father-in-law just introduced me to a site where you can see locations of gas pumps in the U.S. that provide ethanol free gas. After taking a look around my area, I found that there is a station close by that provides ethanol free, however it is 90 octane. My question is whether or not it is wort…

90 octane ethanol free VS regular 87 octane

texases June 26, 2013, 1:28am 6

If you want to compare you’ll need to carefully track miles and gallons over a large number of tanks because the difference will be quite small.