I was just wondering (Fuel Question)

I believe that the 87 octane is "pure" and the 89 octane has ethanol mixed. The 87 will get better milage than the 89, but the 89 supports farmers. It's a decision that you have to make when pulling up to the pump, and supply and demand has pushed the price of 87 above the 89. Obviously people don't like the ethanol blend (put me in that camp).