d-kuzmen
Master Ford Tech
If you drive around with about 2000 lbs in the back of your truck the fuel milage will get better. The reason fuel milage on these trucks is so bad is the regeneration process the exhaust goes through, to go into regen the exhaust temp has to be at a certain point so they dump extra fuel into the truck to get the temp up thats where all your fuel is going and why the oil level ends up being over full when you have it changed. So if you are riding around with a loaded truck the exhaust temp should be high enough all the time so the pcm wont have to add as much or any at all to go into a regen brining the mpg's up. I know this sounds weird but trust me it works.