I'm new here and have a question on regearing. I have a2013 f150 2wd. I just put a leveling kit and 33" tires on it. My mpg has gone south quick, which I knew it would. I've been told regearing the rear diff will fix the mpg and get back to close to stock. Is this true? I know it can be expensive, but I want to do everything right so the money doesn't matter. I would really like to hear from anybody that has done it and if it really does work. I've also lost some of the power too. That would be another reason I'd be doing it. Thanks for your input.

 

Did you re calibrate your speedo/odo?

 

I have only about 5k miles but have been trying to maximize MPG


Around town (Newport News VA --> Lots of Stop & Go) I get about 18MPG


On the Hgwy if the traffic isn't bad I get Between 21 to 22 and in some cases have gotten a little more --> Must have been mostly down hill.


To get the best mileage I agree 60 - 65 is best


And I do my best to keep RPM at 15K and 20k rarely


DonR

 

I just bought a 08 screw with 5.4l 3v and im getting 13.5 mpg each tank constantly and right about 300 per tank and putting 20-22g in at a time. Does that sound normal?

 

I have a 2013 SCrew, 4x4 loaded FX4 with 3.73 gears and about 9,000 miles. Mostly in town type driving with a relatively light, eco-minded right foot, my lifetime fuel economy is sitting at 15.3 mpg. I see a lot of people here talking about 16-18 combined mpg. Maybe mine will get better in time??




It's a wonderful driving/towing vehicle, even if it is more "car like" than any truck I've owned. (and I've owned a bunch of trucks!) If anybody is wondering why a person would choose the eco over the V8, all you need to do is hook my 27' boat to the back end of each and you'll know why. No comparison when towing, i've tried both. Several times.

 

Depending on your set up I'd say that's about normal. I know of several 5.4's that all get about that. That is why i stuck with diesel for my 2 previous trucks. Ford economy was pretty poor in their previous gassers

 

I'm at 6000 miles and sitting at 16.1 mpg US. You probably do more city driving than I do so your mpg is probably decent. 80% of my driving is rural highway with a few stops.

I haven't tried towing a large trailer yet but I look forward to doing that soon. I've heard/read positive reviews that the eco is great for towing.

 

I called the Ford dealership here in Tallahassee. The guy in the service department told me he could not re configure the computer for my 35s because "the computer only has a setting for one tire size." How did you go about re calibrating yours?

 

I used the hyper tech max energy programmer from auto anything.com. You can also bump your hp by 10 by using their performance tune.

 

My city driving is short distance, low mph. So far I have determined that limiting "drive" to 3rd gear at about 2krpm works best. Once I reach 2krmp, I ease off the accelerator and the dashboard instant mpg gage rises to indicate economy. Proplem is my trips, right now, are short errands.