Gas Mileage

Gas Mileage on my 04 Screw 5.4L Triton

My girlfriend drove mine to Atlanta the other day and according to her got 22 MPG on the interstate. I have never changed the plugs in this thing and it has 160K miles on it. I was shocked as I just put some 12.50 Mickey Thompsons on it. The big tires may have thrown off the computer or something.....

Nice Mac! I get about 16MPG with mine, combination highway/city driving.

I get decent mileage when I drive but when my wife drives it's a different story!

I have gotten as high as 22+ mpg on my truck as I drive the flatlands between Houston and Brownsville, TX. That's averaging 65 mph, highway. It's a '04 model with only about 61k on it, so it's been broken in very slowly.