Ok, nearing the end of the towing season and getting close to putting the rig to sleep for the winter.
In total I have travelled 5779 km using 1667.96 litres of fuel.
Best mileage was 10.93 towing, worst mileage was 6.40 towing. 90-95% of the km on the truck was towing. There was a small amount of running around town with short trips and lots of stop/start traffic.
All fills/mileage have been recorded in an apple app called road trip on my Ipad.
It provides an average MPG (US gallons) of 8.44 mpg. The lie-o-meter typically sits around 25 l/100km (9.4 mpg).
The truck now has 185177 km on the odometer.
There are two factors I need to investigate:
1) the mass air flow (MAF) sensor may be a bit dirty. A cleaning is in the near future, just have to figure out how.
2) the mileage on the spark plugs is unknown.
If the MAF was dirty and the plugs were near the end of their life would this account for the above mileage?
I was getting 9-11 mpg with my 4Runner. That being said the towing experience is night and day, and there is no way I would tow with the 4Runner again (also our new trailer is over weight for the Toyota now).
Is this average/good/bad mileage for a 2008 V10 F350 towing a 7000 lb trailer?
Spree 318bhs. Blue Ox Sway Pro WD hitch.
Primary tow vehicle 2008 F350 V10 Crew cab.
Back-up tow vehicle 2005 4Runner V8 Limited.
The Ford V10 while known as being a good TV motor it has never been known for fuel economy. Most people seem to report 6-10MPG no matter what. Years ago my big block Ford 460 van got 8MPG no matter what. That is one reason many people prefer to tow with a diesel.
I work out your average mileage to be 8.15 miles / US gallon using your numbers. (28.86 L/100 km or 9.78 miles / imperial gallon). I would expect that there are gas engines out there that would do allot better. I used to get 14 miles per imperial gallon with my old GMC 350 pulling a 7000 lb trailer.
2011 F350 SRW short box 4x4 CC 6.7 PS King Ranch
B&W TurnoverBall and Companion
2003 Citation Supreme 34 RLTS
Our 2010 F250, V10, 4x4, 4:10 gear pulling a 37' Laredo, Combined weight of 20,000 lbs averages 9 mpg overall. Empty highway truck weight of 7400 lbs average 13 mpg. This is average over the last 15,000 miles of driving.
I don't pay very close attention, but when I've checked mpg on our '05 F250 V10 (all stock) while towing it's been between 6 and 8. My TT is around 6500 lbs. All readings I've checked towing the same trailer with our '05 Expy 5.4L V8 were in the 8s. Our first trip towing with the Expy our scaled weights with empty tanks (including the Expy's), cargo, kids, etc: TV: 6850, TT: 5280. A full tank of fuel puts us at max gvwr on the TV, so we got the pickup and tow with it exclusively.
I commute to work and back in the F250. Speeds range from 25 to 45, 36 miles a day and, when I've checked, mpg has been 10s and 11s.
If anyone has moded a 3 valve v10 with any increased mileage success, I'd sure like to hear from you!
Travel Trailer: 2010 Dutchmen Sport 27B Tow Vehicles: 2005 Ford Expedition 5.4L V8 4x2
2005 Ford F250 Crew Cab Super Duty 6.8L V10 4x2 4.10 open diff
My 2010 is a 3 valve, V10 which is much stronger factory package then earlier V10's; the changes I've made is to install a K & N Air filter and I use a Jet Performance Programmer which these 2 items gained me about 1/2 to 1 mpg. Our Lared weights 12,250 loaded ready to camp. I've checked my mileage repeated with both the computer and manual methods and as stated average 9+ mpg. After reading what others are getting I feel good. I am light on the gas pedal and cruise at 64 mph.
My '01 F350 V10 3.73 yielded 8.75MPG(US) this summer pulling 7000lbs.
I'm in BC, so I did alot of climbing this year too - we usually head south along the coast.
Pretty happy with the mileage, but a gear change may be order to try and keep the RPM's up a bit.