Slant Six mpg's?

On the ones I've owned....20MPG with a '61 Valiant 170 auto.....22MPG with a '66 225 and a 3 speed.....15MPG in the '78 D150 225 2bbl. 4 speed. All the engines were stock originals with freeway gears. You can add a few MPG's for highway only and subtract some for in-town only.