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6.4L towing MPG?

PCT

PCT

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I pulled a 26’ TT (30’ from hitch to bumper) from California Central Valley (near Stockton) to Sedona AZ. 4 days. Day 3 had huge headwind about 40 mph. Trailer dry weight is about 8k, with all of our stuff we’ll round to 9.5-10. I set cruise around 62 mph for a majority of trip. I averaged about 10.4 mpg EVIC(mine has been calculated to be with in .2 mpg)

What do y’all think with a 6.4L hemi?

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That’s about what I see if I’m nice to it as well. MPGs drop fast once you get over 65 though.
 
I get between 7.5 to 8.5 mpg towing my 5v’r on the Hwy, it goes up a bit on all other roads. Usually running 72 on the Hwy unless traffic dictates otherwise.

Fully loaded I’m right around 10k.
 

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gimmie11s said:
I think you did outstanding. 10+ is GREAT mpg towing for any motor -- especially the gas option.

That said... 62!?!?!? Every 18 wheeler on the road was probably flipping you off the whole way lolol
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I was being passed nearly ever big rig lol! Especially in Arizona, I was getting like 5-7 mpg trying to go 70-75 MPH. Screw it, I’m slowing down!


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PCT said:
I was being passed nearly ever big rig lol! Especially in Arizona, I was getting like 5-7 mpg trying to go 70-75 MPH. Screw it, I’m slowing down!


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Click to expand...


Too funny.... I often wonder what my mpg would be if I slowed it down to 65 mph or so. I average 70-75 when we travel so im in the 8 to mid 8's mpg. Oh well haha
 
I had a 2014 with the 6.4 and the old six speed. Pulling a toy hauler at 9500 lbs and going 63 mph I would average 6.5 to 8 mpg depending on the terrain. I would have been thrilled with 10 mpg.

The only time could get 10 mpg was if it was completely flat. I would see this traveling east out of Flagstaff for about a 100 miles.

One trip coming home heading west into Barstow, the head wind was so bad, my dash was consistently showing I was getting 2 to 3 mpg. The one and only time I had to pull over and transfer gas from the toy hauler to the truck.
 
I did a trip to Tenn from Fl two weeks ago. Towing 7500 pound RV. I averaged 9.3
mpg. Better than my 1500 did on the same trailer. Plus the larger tank gives me much better range.
 
Firebird said:
Ok, that's what my new 23 has as well. I'm curious to see how it tows my camper.
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For context, I have a 20x8.5’ enclosed 7’ interior height roughly 7500lb and I tow at ten over the limit same as I do unloaded. 75-80mph is really hell on mpg but I got places to be.
 
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