fuel mileage

I have a 06 Ram 2500 diesel. My trailer is a 2012 Keystone Springdale 281bhs. I have consistently averaged 10 mpg. One trip out of many when I had water tanks full and another 60 gal of water in truck I got 6mpg. I usually travel about 60 to 65. If I push 70 mpg goes down quickly.

thank you ripperoo: as stated just wanted to know what others get as I thought my mileage/gal. was out of line so I did some more calculations and yes I was way out of line. I now am at a 11.5 to 12 and I think that is not bad. Maybe the fuel between the US and Canada makes the difference. We have fuel with very low sulphur and low Bio.

I just finished a trip to the Black Hills with a 7k FW. I got 14.8 with my 05, 2500, 5.9, 3.73 auto. Best buy I ever made. My 01, 2500, 5.9 gas gets 8 to 9 hooked on to a stock trailer with 10k gross.

donn0128 wrote:
Too many variables. You get what you get. If your worried about fuel economy, then maybe you better sell your RV and truck and buy yourself a hybrid.

Wow, absolutely useless answer. He didn't ask your opinion, he asked what those who have 5.9 Cummins engines get for mileage.

OP, if I had a Cummins, I'd tell ya. And I'm sure it would be better than the 8.8mpg I get out of my gasser.

'06 5.9 CTD towing about 10,000lb TT. 10-11 at 60-62 mph. 1700 rpm with 3.73. Might see 12mpg on a good day. Have gone as low as 7-8 bucking strong headwind. 60-65 mph seems to be the sweet spot. Would, no doubt, do better at 55 but, never tried it. Mileage drops significantly at 70 and above.

I have a Dodge 2500 towing about 10K and I get 10 on a good day. We've hit as low as 7 in the hills. Towing a utility trailer or boat, I get about 15. That huge trailer drags quite a bit of wind.

I can't imagine anyone getting anything close to 15 towing a TT or 5er.

14K VERY Tall 5'vr.......10 to 12 mpg..........4:10 rear end

10 mpg pulling 10k. Truck has 4:10 gears

You asked: "what do you get pulling a 12,000 lb. TT with your 5.9 Cummins?

Denlor wrote:
I am getting between 15 and 16.5 but have heard guys say they get 17-19

Sorry, I have to doubt both of these claims.
But truthfully, I am getting around 21 with my Duramax..honest.

Correct me if I'm wrong, but all tvs towing a fiver or a standard TT all average around 10-12 mpg because of wind resistence.