6.7 Diesel Towing MPG

One big reason that I bought a diesel was the ability to install a large fuel tank, so together with the greater fuel mileage,it gives me much more range and allows me to purchase at the place of my choice rather than the gas gauge mandate. When one gets to select lower fuel prices, much of the cost difference per gallon disappears.

4x4ord wrote:
I would expect about 8 mpg towing and 17 empty.

LOL!!
OP's trailer is 7,500#, when I towed my DD 4 horse trailer home about 7,000# with the old 5.9, I went from about 11 pulling my 12,500# 5er to 14 mpg!
I would expect the OP to get around 12, if he isn't trying to go 75+.

I could make that thing get 8 mpg towing!
But I mananged to click off a 9mpg tank last year pulling a v nose 6x14 cargo trailer.
85mph into a Montana head wind will doo that to a guy.

Thanks for all the information. Not trying to save and $$$, just trying to figure out when/where should i plan on stopping for fuel. We like to try to plan the fuel stops with food stops and or maybe short activites for the kids.

Thanks again to all.

#7000 trailer is exactly what I have and I just got 13.68MPG over 5,231 miles. I know we have way different vehicles but I would plan on no less than that as mines old school and out dated.

For our trips we stop 2H after leaving in the morning, then again to make lunch and then once more 2H from our destination. We travel 600-700 miles per day requiring only 1 fuel stop so usually fill up at lunch.

1320Fastback wrote:
#7000 trailer is exactly what I have and I just got 13.68MPG over 5,231 miles. I know we have way different vehicles but I would plan on no less than that as mines old school and out dated.

Newer will likely give you a bit lower MPG.

BayouBoys wrote:
Thanks for all the information. Not trying to save and $$$, just trying to figure out when/where should i plan on stopping for fuel. We like to try to plan the fuel stops with food stops and or maybe short activites for the kids.

Thanks again to all.

I went to Hilton Head on my first trip with my new Ram 3500 CTD Towing my 33' Reflection fifth wheel - 12K lbs. It was 186 miles and I did it on less than 3/4 tank of fuel. Towed previously with a 6.4 Hemi where I was used to watching the needles progression from F to E. Not so with the diesel.

My prediction? Your going to love it.

I get 7-8 towing 17000lbs at 75mph.
Set the cruise and go.

My 3/4 ton 6.6L Duramax gets 10.5-11.5 mpg towing. On good roads and freeways I tow a steady 60 mph. I have absolute no “need for speed” with that cozy, expensive toy in tow. Not towing: 16.5-17 mpg.

One trip i was bucking a very strong head wind in Nebraska. Was getting 7 mpg with my 2012 F350 6.7. Was towing a 36' Keystone Raptor. Most other times i averaged around 10-11 if i took it easy. Finally bought a auxiliary fuel tank to eliminate haveing to stop so often to fuel up. One of the best purchases ive made for traveling.