Im in the mountains of North Carolina , so not alot of flat road trips here , pulling a work trailer around 5000 lbs avg 12-14 mpg
not pulling and nothing in bed around 16-17 mpg
one trip off the mountain about 50 mile in the flat lands 19 mpg
the above numbers are driving nice and top speed 65 mph
driving like Indy 500 , 8 mpg

so far im happy

373 rear , crew cab , 4wd f250

 

Here's my official 2nd tank of gas report. These numbers are calculations and not readouts on the dash.
131 miles, all highway, 72-74 MPH, 15-20 headwind, no load: 13.1 MPG
123 miles, all highway, 72-74 MPH, 10 cross wind, no load: 13.9 MPG
Total miles on the odometer: 688 miles

 

OverviewJust got back from a 700 mile trip pulling a 5th wheel trailer and wanted to update you on the performance and mpg on my new 2011 F-250 6.2L. Truck had just went over 1,000 miles before trip.

Truck - 2011 F-250, 6.2L, LB, SC 2x4, 3.73 rear

DetailsThis trip was mostly on Interstate highways and I ranged speed from 55 mph to 70 mph.
I kept transmission in D and did not manually select or remove any gears.
The trip was from Phoenix Arizona to San Diego California and back.
Most of the trip was level except for the climb at Palm Springs westbound.
Westbound I had a headwind of 8-10 mph which hurt mileage.
In Arizona I drove 65 -70mph and in California 55-61 mph.
AC was always on for the entire trip.
My 30ft 5th wheel weighs 8,800 lbs total. 7,500 on the 2 axles and 1,300 on the hitch.
Most of the trip I stayed at 61mph and 1600 rpms which was the sweet spot for the Engine & Trans.
All of my fuel was 87 octane with 10% ethanol which I didn’t like but that what was available.
Outside air temp ranged from 65 to 90 degrees.
When filling with fuel I pumped until the automatic nozzle clicked off and I went up to the next full dollar amount. This makes all fill-ups consistently close in being the same.

My observations.Transmission took at least 5 miles to get up to 165-175 degrees.
Transmission temperature ranged between 184 – 199 degrees.
Engine had plenty of power and torque in all speed ranges.
Transmission did not miss any gears and was very smooth shifting.
The exhaust sound is good at cruising and downshifting sounds great!
Pass a few trucks pulling trailers, Dodge Cummins, Ford F-150 and even an F-250 Powerstroke.
Engine response was very quick when I needed it.
Mileage westbound with headwind was 8.7 mpg. (Hand calculated)
Mileage eastbound was 9.3 and 9.4 mpg on two fillips. (Hand calculated)
When hitting the headwind the truck liked 5th gear but quickly changed to 6th when wind decresed.

My thoughts and conclusionI converted from a F-250 6.0L Powerstroke diesel to the 6.2L gasser.
I’m very happy and have been pleasantly surprised in the performance of the engine and transmission.
I hope with time and miles my pulling mpg may raise and reach 10mpg which I think is possible.
The continental tires were good and quiet on the highways.
Hopefully this will give you a better idea of the performance of the 6.2L gas engine.
In the next month I will drive 3,000 miles pulling this trailer. I will update you after the trip.

 

Anyone else have any input on MPG
Unloaded or towing?

 

I get 13.6 to 16 going back and forth to work. depends on temp. outside and if I hit lights And traffic. About 1 mpg better then 6.4. In a few weeks I'll be towing a 5th wheel camper that weighs 12000 lbs. I have F350 6.2l with 4.30 4x4.

 

12,000 is a good weight. I suspect you will get 8.5 to 9 mpg pulling.
If you watch your speedand keep around 60 mph you'll do ok.
Not sure how the 4.30 rear will make any difference. I have the 3.73 in mine.
Keep us posted.

 

getting 12.1 mpg in 6.2 400 miles on it

 

I have 2600 miles on mine now and just did a avg. from the time I picked it up until now.
I am avg. 10.7 MPG. Now that is very little highway miles, maybe 700 total and the rest is all city stop and go. Only have about 50 miles with towing 9000 lbs.
I did just add a Airaid intake but I have not driven it enough to see if it will make a difference, only time will tell.
I keep a log on my iPhone with all the fill-ups and service so it was easy for me to see the MPG's over the long term.