I'm in the process of buying a new to me 2008 Georgetown 36' ds350. After driving it i noticed that it is a high revving engine. No problem. But very different from my diesel. I'm curious. For those of you with (i think) 2006+ v10 what is the rpm sweet spot on class A for mpg?

I run about 63 MPH which works out to about 2200 RPM. Average about 7 MPG.

Depends upon the differential ratio and wheel size. Not all are alike.Gear ratio and RPM are a science.

Hi,If I go 49 mph rpms are about 1800. If on the level I average 10 mpg. I weigh at 13700 lbs fully loaded in a class C.

lostdog wrote:I run about 63 MPH which works out to about 2200 RPM. Average about 7 MPG.That's about right, I run 65 and pulling my 2012 Chevy Cruze I average 7-7.5 mpg and without towing average is 7.5-8 mpg. I have the 22.5" wheels not sure what wheel size you have. The V10 is a great engine and I have had no issues with it.

rpm sweet spot on class A with 365hp v10 for mpg?

jolooote
Explorer
Feb 02, 2015
2006 34' Class'A' liked 67 mph.
happy-2
Explorer
Feb 02, 2015
I to have a 2006 37c with a v-10,i find that if i use the cruse control i get best mileage at 65, the tow haul is the best thing going,
Sfla2
Explorer
Feb 02, 2015
If you get a scan gauge it has a command called lod which is the load % of eng you are using this is from manual
This is a percentage of the maximum power available currently
being generated. In some vehicles it is the maximum
available at the present RPM. it really helps as i stay just under 60% which is my sweet spot, any highr can see MPG fall
carringb
Explorer
Feb 02, 2015
hanko wrote:

Oh we have 6 gears, where's the other one, I can only find 5

"4th" gear is actually two different ratios, that are not not used sequentially. So yes, the TorqueShift is actually a a 6-speed even though it only uses 5 at a time.
doxiemom11
Explorer II
Feb 02, 2015
We drive our V10 at 55-59 mph and average over 9 mpg. Slower is more fuel efficient. No problem driving 65 if you want to though.
hanko
Explorer
Feb 02, 2015
Gjac wrote:
In addition to what Mark said your best MPG will be in 6th gear at the lowest RPM that will keep you in 6th gear without constantly downshifting. I am old so I use a vacuum gauge to accomplish this, I'm sure there are computer systems that can do the same thing.

Oh we have 6 gears, where's the other one, I can only find 5
Gjac
Explorer III
Feb 02, 2015
In addition to what Mark said your best MPG will be in 6th gear at the lowest RPM that will keep you in 6th gear without constantly downshifting. I am old so I use a vacuum gauge to accomplish this, I'm sure there are computer systems that can do the same thing.
427435
Explorer
Feb 01, 2015
The slower you go, the better the mpg. The V10, in my experience, doesn't have a sweet spot--------------or it has a wide range of them.

I normally set the CC at 62 mph on 4 lane highways and 55 on 2 lane roads.
dodge_guy
Explorer II
Feb 01, 2015
You will not have an issue keeping it at 65mph. I run mine at about 67 and with the tuner from 5star it can stay in O/D. I avg. 7.5-8.0 mpg. climbing a mountain it will run up to 4300rpm!!! it will have no issue running at that rpm.
RedJeep
Explorer
Feb 01, 2015
This has been helpful. With my current truck/trailer I tried to stay about 57 mph. But, I'm hearing I can drive a bit faster without any significant mpg detriment with my new motorhome.