Not getting Estimated MPG

[Airstreamer67]

I do use the nonspiked stuff in my gasoline generators and lawn equipment to keep it from gumming up the works. But when on the road in the car, I use the food-for-fuel stuff because it's everywhere and it's cheaper due to government mandates and tax dollar subsidies. Maybe one day reason will prevail and the government manipulators will stop tilting the playing board to satisfy the interest groups and their lobbyists. I know, Pollyanna just musing pipe dreams here.