July 26, 2009i have 97k on mine still running well... its no power horse...
best milege i did before the lift and tires was 13.5 - 14
after the lift and gears and all if i see 11 mpg i am happy.
I DO NOT use the digital MPG meter, those things are off by a lot... I do hand calculation and my speedometer / odometer is accurate
if people are telling you they are getting 16+ on their 250 5.4L then a. they drive like grandma or b. they live on a sheet of glass
My milege does not change much when driving harsh or towing... worst when towing and driving hard was about 9-10mpg