First tank full on my 2013 F-250 6.7 gave me 14.27 MPG hand calculation, 14.4 according to the truck's computer That's CITY driving with a heavy right lead foot & the A/C on. Once I take a long trip on the highway, I'll know what type of MPG, i'll be able to get out of this factory stock 6.7

 

Sounds about right.

 

Oh & that city mpg were with BF Goodrich T/A tires, once those tires wear out, I'll buy H/T tires, I'll bet my mpg will go up

 

My MPG will differ from other members, cause of the hot weather & the bumper to bumper traffic we have in MIAMI

 

Today i filled my tank, 15.32 MPG hand calculation, 15.7 according to the truck's computer. On this tank full I added POWER STATION (the gray bottle)

 

Forgot to mention the 15.32 mpg was city driving with the A/C.

 

And i had changed the air filter.

 

This is strange This tank full was hand calculated at 15.4 mpg but the truck's computer said 15.3 mpg. this week i worked from 8:30am to 5pm. i was in major bumper to bumper traffic

 

Sounds like it's doing just fine.

 

Worst mpg I've had was this last tank full, 14.0 mpg