Fuel Mileage
Registered User
Joined: May 2007
Posts: 46
Likes: 0
From: Ft Collins, Colorado
fuel economy
Hope this will help some. First of all, I have a 2007.5, 6.7L, 4x4, QC. The turbo has been replaced with a newer version that has since come on the 08's....or so I have been told.
Handcalculated with between full tank fillups:
highway 17.5 to 19.5. (average about 70mph...one stretch 65, remainder is 75...about 50/50). Regardless, it is much more fuel efficient than that gas 3/4 ton Chevy I used to drive.
in town leaves alot to be desired: 13.0 to 14.5
with the pop top camper in the bed at 55mpg = 15 to 16 mpg.
Handcalculated with between full tank fillups:
highway 17.5 to 19.5. (average about 70mph...one stretch 65, remainder is 75...about 50/50). Regardless, it is much more fuel efficient than that gas 3/4 ton Chevy I used to drive.
in town leaves alot to be desired: 13.0 to 14.5
with the pop top camper in the bed at 55mpg = 15 to 16 mpg.
Registered User
Joined: Mar 2009
Posts: 6
Likes: 0
Just to throw out some more #'s.
My friend just bought a new 09 4x4 quad 6 speed manual and is getting 18.5 mostly highway driving commuting to work.
I asked a guy today in a 09 2-wheel drive mega auto what he was getting and he replied 16. Is that highway or city,...highway--14 in town!
I was surprised how low for a 2 wheel drive.
My friend just bought a new 09 4x4 quad 6 speed manual and is getting 18.5 mostly highway driving commuting to work.
I asked a guy today in a 09 2-wheel drive mega auto what he was getting and he replied 16. Is that highway or city,...highway--14 in town!
I was surprised how low for a 2 wheel drive.
Registered User
Joined: Feb 2006
Posts: 17
Likes: 0
From: Round Rock Texas
7.2 MPG Hand Calculated
Just came back to Austin Texas from Big Bend yesterday. Between Fort Stockton and Junction (lots of big hills), running about 75 MPH on I-10 (speed limit is 80) pulling 10K lb. 28foot toy hauler. Driving into a 30 MPH wind from the North East. About 10K miles on the truck now. Megacab 4X4 auto. Tires aired down to about 65 PSI after doing some unimproved back road driving in Big Bend (couldn't find an air station that would put them back up to 80 at the time of the morning we were driving).
Wish the fuel economy was better, but couldn't ask for more power. Just set the cruise and go. Was passing RV's and other brand diesel trucks with smaller trailers on the hills like they were setting still. About the only effect noted was that the coolant temp would wander a bit above 210 going up the hills but would immediately drop back on the other side.
This truck seldom moves without the trailer behind it, don't really have a good idea of highway mileage without the trailer, but suspect its around 15 MPG.
Wish the fuel economy was better, but couldn't ask for more power. Just set the cruise and go. Was passing RV's and other brand diesel trucks with smaller trailers on the hills like they were setting still. About the only effect noted was that the coolant temp would wander a bit above 210 going up the hills but would immediately drop back on the other side.
This truck seldom moves without the trailer behind it, don't really have a good idea of highway mileage without the trailer, but suspect its around 15 MPG.
Registered User
Joined: Jan 2006
Posts: 106
Likes: 0
I used to get really good economy until I had it re-flashed a month ago. Yesterday drove about 160 km trip and got about 14.5 mpg. It has steadily got worse. I have an Edge monitor on it and it tells me a regen is underway about every 150 km. When it says that I check the EGT and it is up around 1300 - 1400, so probably in regen. I am an unhappy camper. Wish my 04 had been a 3500 dually and I would never bought this!
"California Style"
Joined: Oct 2007
Posts: 1,697
Likes: 12
From: So Cal
Same here
Just came back to Austin Texas from Big Bend yesterday. Between Fort Stockton and Junction (lots of big hills), running about 75 MPH on I-10 (speed limit is 80) pulling 10K lb. 28foot toy hauler. Driving into a 30 MPH wind from the North East. About 10K miles on the truck now. Megacab 4X4 auto. Tires aired down to about 65 PSI after doing some unimproved back road driving in Big Bend (couldn't find an air station that would put them back up to 80 at the time of the morning we were driving).
Wish the fuel economy was better, but couldn't ask for more power. Just set the cruise and go. Was passing RV's and other brand diesel trucks with smaller trailers on the hills like they were setting still. About the only effect noted was that the coolant temp would wander a bit above 210 going up the hills but would immediately drop back on the other side.
This truck seldom moves without the trailer behind it, don't really have a good idea of highway mileage without the trailer, but suspect its around 15 MPG.
Wish the fuel economy was better, but couldn't ask for more power. Just set the cruise and go. Was passing RV's and other brand diesel trucks with smaller trailers on the hills like they were setting still. About the only effect noted was that the coolant temp would wander a bit above 210 going up the hills but would immediately drop back on the other side.
This truck seldom moves without the trailer behind it, don't really have a good idea of highway mileage without the trailer, but suspect its around 15 MPG.
Registered User
Joined: May 2002
Posts: 1,274
Likes: 20
From: Sand Gap, KY.
Some more Towing Fuel Economy Figures.........
All truck info is in signature; I had the ECM updated to reflect my "old" LT285/70R17 Firestone Destination A/T's. I now run some 20x9 Ultra Grinders wrapped in some LT305/60R20 Wrangler SR/A's. I now have to multiply my odometer readings by 1.0683 to compensate for the 20's.
Anyhow, my truck now runs 1,750 rpm at 75 mph, as verified by my Garmin.
I contract haul some on the side; this past Friday I hauled a 1988 Airstream Excella triple axle travel trailer (34 ft and around 6900 lbs) from Hebron, OH to Berea, KY. I left out with a full tank (only had 17 miles driven out of it) and went 278.3 miles and averaged 17.652 mpg with an average mph of 61.84(Juice w/Attitude on #1). Within 10 miles of my destination, I re-fueled and then hooked up. I drove 288.9 miles and averaged 12.862 mpg with an average mph of 56.64 (much lower mph due to an accident delay) Juice w/Attitude on #2. I also have the H&S DPF Delete, too.
That ol' Airstream tri-axle pulled like a dream......I had a standard solid ball mount with 6" drop (no weight distribution hitch) and no swaying and tracked as good as a new one, I'm sure. I was actually apprehensive of the weight and the fact it was a Class IV style hitch. The 6.7L and 68RFE and 3.73 gears are a great combination IMO.
Greg
Anyhow, my truck now runs 1,750 rpm at 75 mph, as verified by my Garmin.
I contract haul some on the side; this past Friday I hauled a 1988 Airstream Excella triple axle travel trailer (34 ft and around 6900 lbs) from Hebron, OH to Berea, KY. I left out with a full tank (only had 17 miles driven out of it) and went 278.3 miles and averaged 17.652 mpg with an average mph of 61.84(Juice w/Attitude on #1). Within 10 miles of my destination, I re-fueled and then hooked up. I drove 288.9 miles and averaged 12.862 mpg with an average mph of 56.64 (much lower mph due to an accident delay) Juice w/Attitude on #2. I also have the H&S DPF Delete, too.
That ol' Airstream tri-axle pulled like a dream......I had a standard solid ball mount with 6" drop (no weight distribution hitch) and no swaying and tracked as good as a new one, I'm sure. I was actually apprehensive of the weight and the fact it was a Class IV style hitch. The 6.7L and 68RFE and 3.73 gears are a great combination IMO.
Greg
Registered User
Joined: Feb 2004
Posts: 405
Likes: 0
From: Cookeville, Tn
I'm glad to hear these mileages. My old Dodge would get 15mpg in town week in week out then I got this Ford at was looking at 11mpg in town. I took it on a 1300 mile trip and averaged 15mpg with the cruise set on 80mph. I really don't understand the big gap between city/hwy on these DPF equiped trucks? My old Dodge would get 15city/19hwy. After I found the button to change the read out on the dash I'm a lot happier!
Registered User
Joined: Jul 2007
Posts: 89
Likes: 0
From: Edmonton, Alberta Canada
Quite simply, these trucks go into regen a lot more with all of the starts and stops when driving in the city, plus the fact that the rpm's are not high enough for maximum fuel mileage (making more soot and causing more regens) when city driving. A way around this is to use tow/haul in the city.
