Just wondering if my mpg is on par 99 expedition 5.4l auto o/d 14city22highway (cruise set on 60mph) 17mpg average I know my expedition is a bit heavier than a swb single cab F150 just curious how the old girl is doing...only thing non-stock is a k&n filter in the stock airbox

 

I'm getting about 12.5 city. No real highway numbers yet, so you're doing just fine.

 

22 highway is great for a 5.4 I believe.

 

I get 18 highway with a 03 scab 5.4 4x4

 

I get about 16 highway at 70. around 10-11 in town. I would love to get 14/22

2000 5.4 4x4 xcab

 

i get around 13 high way or in town dont really make much of a difference