4x4 or 4x2?
I am looking to purchase a f250 4x4 or 4x2 I do need the 4x4 but not as much as I need the fuel enconmy. I am going to get the 6.0 liter. What kind of mpg will I expect with the 4x4 vs the 4x2 and also if i get the 4x4 what can i do to improve the fuel enconmy and even improve it on the 4x2

thanks
garrett