Slant 6 most mpg's

With todays blended fuel a gallon of gas is not really gallon of gas.

This ^^^^^^is the poor-mileage elephant in the room, as alcohol concentration goes up, the MPG's go down. I can't recall what year's we spent suffering with Gasohol in
the 70's exactly, but it's doubtful Mopar used it to calibrate & test these cars......................................................