what do you do to get the most mpg in your truck

Originally Posted by wannabemechanic

I've never heard of this, is there somewhere you recommend reading more about it?

Here you go, they help explain all the quackery;
K&J Magnetics - Fuel Magnets

Describe to me how a fixed thing like rotations per minute changes?
Should not happen with a lock up torque converter

Cause tucking in behind the semi will "pull" your vehicle along. If you get close enough you could theoretically take your hand off the wheel and foot off the throttle. Do not try this at home. When you can lessen your wind drag by 40% safely then something's working. http://www.treehugger.com/cars/draft...s-it-work.html