1. Year - 2008
2. Cab configuration - crew
3. Current mileage on the odometer - 5,600
4. Auto or stick - torqshift auto
5. 2WD or 4WD - 4x4
6. Rear gears - 4.30
7. Tire size- 34 (275/65/20)
8. Cap or no (if a P/U) - no
9. Any aftermarket accessory that has had an effect on your mileage if it is far off the forum's average. - no mods
10. Weight, size and configuration of trailer. Fifth wheel, load-leveler, etc, and how much the trailer weighs approximately. - 5k or so with fuel and gear, bumper pull w/20' boat.

I average about 10 mpg on a 400 mile trip. Almost all highway travel at 70 mph. Passing slow traffic is almost as easy as if the truck wasn't loaded. (except for the 26' total length and 8' width)

2007
Crew Cab
13500 miles
6 speed
4WD
4.30
OE
Bak Flip Tonneau
none
Equipment Trailer conventional carrying a pickup. Total Trailer Wt 7000

Hi MPG 11.9 Lo MPG 9.6 on a 4000 mile trip from east coast to west coast
jeff

2002 v10 E350
Econoline
125,000 miles
4 speed auto
2 wheel drive
4.10 full float
245x75x16
no mods
Sunnybrook 3310, Hensley Hitch, Motorcycles in van. GCWR 17,300 lbs.
On flat ground 60-65, 8-9 mpg. Hills 7.5-8 east coast hills I-81

So many variables to consider. We are around 21K truck and 5th wheel. we have seen 6MPG we have seen 11 mpg. 8 to 8.5 is a good average. We are hooking up now for a @100 miles trip Westbound on the Ohio TPK. It is in the mid 80's low humidity, no wind. We have done this trip before and I would expect to see @ 9 maybe 9.5MPG. fairly level road at the speed limit. MPG is a fleeting figure..

[QUOTE=andrewzx92000]2002 v10 E350
Econoline
125,000 miles
4 speed auto
2 wheel drive
4.10 full float
245x75x16
no mods
Sunnybrook 3310, Hensley Hitch, Motorcycles in van. GCW 17,300 lbs.
GCWR 18,500
On flat ground 60-65, 8-9 mpg. Hills 7.5-8 east coast hills I-81

Our latest towing mileage after slowing down to 55 & 58 form 60 & 65 was 8.92 over 10700 mile trip (Alaska and Canada). Before it was in the low 8s.

Denny

2006 F250 SD Super Cab 2wd, 6.8L V10, 4.10 diff, 30 foot fifth-wheel trailer, combined weight on scales is ~16,000 pounds. 9.5 mpg on mix of flat ground and 6% grades.

2000 F350, V10, 4.30. I have slowed down to 55 and 58. I came back from Colorado through southern NM mountains (Ruidoso) and the worst tank was 7.85 into a howling wind. The best was 9.25. I averaged a bit over 8.3 and my CAT scale ticket says 21345 total for a 36 ft. fifth wheel and I did have to go to 4,000 rpms on a few hills and passes.

2008 F350 cc longbed 4:30 gears, 275-65-20 tires. Currently there is 15,550 miles on the truck.and I have added a Magnaflow single in dual out muffler. Truck weight 9520lbs., trailer 2003 Sunline 267SR weighs in at 7200-7500 depending on how much stuff wife brings, total weight of 17,020 lbs. I like to keep up with traffic so my gas mileage might be worse than some with similar weight, but I average between 8 and 8.5.

9 MPG
1. Year 2008
2. Cab configuration crew
3. Current mileage on the odometer 9300
4. Auto (torqshift)
5. 2WD
6. Rear gears 4.10
7. Tire size factory stock
8. Cap or no NO CAP (8 foot bed)
9. Any aftermarket accessory None
10. Weight, size and configuration of trailer. Gooseneck horsetrailer 10,000 lbs. 16 foot utilty trailer with tractor on it 6000 lbs

1. 2002
2. CC
3, 115+
4. auto
5. 4x4
6. 3.73
7. 285/75/17 toyo open countrys
8. None as of yet
9. aftermarket exhaust?? Dont know what as I havent looked that close yet.

10. 3 stantion horse trailer with 3 1200 pounders in there. about 10 on different terrain. also a 18 ft boat that is around 2500 lbs without 39 gallons of gas to fill it and got about close to 12 on different terrain as well. all at 55 mph.

2003
Excursion LTD
95,000 miles
Automatic
4x4
3:73 gears
285 series tires

7.5-8.5 mpg towing

Milage Comparisons
 

1. Year - 2000 F-250 longbox Superduty
2. Cab configuration -Supercab
3. Current mileage on the odometer - 44,500
4. Auto or stick - 5 speed Manual
5. 2WD or 4WD - 4x4
6. Rear gears - 3.73
7. Tire size- (235/85/R16)
8. Cap or no (if a P/U) -My Haul is a Northland 990 Camper
9. Any aftermarket accessory that has had an effect on your mileage if it is far off the forum's average. SCT TUNER, Zoodad Cool Air intake, Throttle Body Spacer, K&N FIPK, all synthetic fluids, drive by a Vacuum Guage, etc.
10. Weight, size and configuration of trailer. - Loaded Slide in Camper approximately 3,300 lbs.

The combination averages 12.5 mpg on long trips. Almost all highway travel at 55 mph. I use speed control most of the time except in hilly terrain. I don't pass traffic unless they happen to be going slower than me. The truck is basically never on the road without the Camper.
HAPPY TRAILS.:)

1. 2001
2. Excursion
3. 112,000
4. Auto
5. 2WD
6. 3.73:1 w/LSD
7. Stock (load range E)
8. Excursion
9. Stock
10. Tag-along cargo trailer, approximately 7,000 lb.

We tow a lot of different trailers, that trip was the worst, on a trip from GA to CO. It was actually worse still crossing Kansas with a viscous head/cross wind. In fact, that day I passed another Excursion towing a large travel trailer. It seemed like he had all he could do to hang onto it.

Lou Manglass

8 mpg towing, 13 mpg highway, 11 mpg combined

1. 1999
2. Std cab
3. 127,000 (15,000 on new engine)
4. 5 speed standard shift
5. 4wd
6. 4.30
7. 285/75/R16
8. No cap
9. Bone stock
10. 20' gooseneck stock trailer. Weight depends on how many cattle are in it at the time :D