What milage are you getting while towing?

[machterhof]

12. 6 with my 30' 10000 lb 5er behind it. Has enough power for me - I'm happy with it.

 

[Hunter1]

With 3. 73 rear end, 6speed HO, GCVW at just over 20,000 pounds, worst was 8. 5 into hard headwind with winter diesel and best has been 12. 5 with summer diesel



6th gear is pretty useless, if you come to a hill and keep your foot in it and shift into 5th near 60MPH or so you can do fine, loose the momentum going up and you got trouble



Hunter1

 

[BillGotthelf]

14,000 lb 5th wheel-12. 3 avg at 65 down to 11. 4 at 70.

 

[Ross]

Same experience as you, Kmac. I tow a 20K trailer, plus about 8K for the truck. at 60 mph, I get around 10mpg. 65 mph, 9 mpg. At 70 mph, 8. 0mpg. With this much weight, speed seems to really hurt.



My truck is heavily bombed, and can get 20 mpg on the highway (empty), but if you use the power in reserve for towing, your mileage will suffer. This should be no surprise. There's no free lunch, and if you're moving a lot of weight, pushing a lot of wind (speed), it hurts. All most of us are doing is adding fuel with our bombs. You only pay the penalty if you use the extra fuel needed to go faster, top the hill at 70, accelerate faster, etc. Most of these bombs do little to dramatically change the efficiency of the engine, so if you use your new found power to do more work, you burn more fuel.



All in all, though, these engines are very, very efficient and are capable of soooo much power. You gotta love it.

 

[tom sweeney]

... . no worries about slowing down on hills with my 4:10's... lol

low... . 8. 6... . high... . 11. 4... normally run at 70-75 mph cross country... i use 10mpg to figure approximate fuel consumption (vacation financial planning... . lol) and it works quite well for me!!



... as long as i dont get "stuck behind a slo-poke", i can pull ANY hill loaded and in 6th gear,my rig totaled 19,500 (truck and camper loaded)... ... have fun!!!... . tom

 

[Dean Upson]

The hills don't matter much with my 23k rig and 4. 10s, either.

Dean

 

[b_monty1]

10-12 mpg towing a 25' fifth wheel 7500lbs at 70 mph towing over 50//50 rolling hills/flat terrian