One more tip for increasing MPG :
Install a large face Vacuum guage where it can be in your vision while not taking your eyes from the road, and drive to hold maximum vacuum reading proportionate to your urge go.
Also will need loud radio or earplugs to cancel the horn noises as the rude motorists declare you a "barnyard driver" or worse because of your less than brisk speed and acceleration.
Actually driving with the maximum vacuum goal will make you a more efficient driver as you learn how to think of road conditions ahead to keep the vacuum high.
A pleasant study and practice on the daily drive but can drive your passengers nuts.
