Using ethanol free gas.

E free gas will give you about 4 to 5% difference in mileage.

If anybody tells you appreciably more their math is wrong or their testing is flawed.

E gas will always give you more power because of the O2 and cooling effect it give your engine.

I run it in all my small engines, and RV generator...a little to spendy to use in my truck. I pay between 4.50 and 5.00 a gallon for it here.

Ethanol is pure crony capitalism. Payback to Big Ag contributors.
It is a net increase in use of resources and has caused billions of dollars in equipment damages There are lots that repeat the pr campaigning points, of the media attesting to its benefits, when science and honest reporting shows it is costing society and our pocket books big time, in all areas including most prominently food costs and avilability. Lots more corn and soybeans and a lot less in food crops and variety.

Your lucky it's so easily available where you are.
We have to drive 20 miles to put it in our vehicle tanks.

Yes it improving my mileage about 4 MPG. I jumped from 14 in the city to over 18.

You did mean that your mileage improves by 4-6 mpg not that you're only getting 4 - 6 mpg, right?

Bill