I used pure-gas.org to find an ethanol free gas station near me. The nearest one is 17 miles away. So on Saturday mornings, early, I load 4 each 5 gallon cans in my truck, drive there, fill up the cans and my truck with it. I have been doing it for 4 tankfuls now. The difference is astounding. The truck runs smoother at idle, has much better low end torque and throttle response, and my mileage has increased approx 3mpg in normal driving conditions.
I take the extra cans for mid week fillups.
Oh, and my lawn mower really loves the stuff. It too runs much smoother.
I told the CFO of our company about this, and he took his 530i to the same station and filled up. Within 100 miles, his MPG computer display was showing a 10% increase in MPG. He is sold.