tank size,gas mileage on 6 cyl. F-150?

[broncokenny]

tank size,gas mileage on 6 cyl. F-150?

 

[spt913]

i have a 4.2 f150 4wd, i have a 21 gal tank and get about 18 mpg

 

[lostin90s]

tank size,gas mileage on 6 cyl. F-150?

We have 5 F150 4x2 at work 04 06 07 only one to break 18 MPG is the 07 with manual trans.