Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 07-04-2019, 04:09 PM   #43
Senior Member
 
cekkk's Avatar
 
Join Date: Dec 2010
Location: Colorado High Country
Posts: 360
I just noticed this was a motorhome for him but since I am here. My 7.3 f350 Diesel gives me just under 11 miles per gallon at 62 miles an hour on long trips, meaning over 500 miles each direction.

I have gotten a bit more and a bit less with varying weather and road conditions but in general, I just think of it as 11 miles to the gallon.
__________________
'02 7.3 Powerstroke F350 DRW, Ford AIS
6.0 Cooler, PacBrake, Flashpaq tuner
2011 Eagle 320RLDS/Equalizer WD Hitch
cekkk is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-04-2019, 04:11 PM   #44
Senior Member
 
Dutchstar411's Avatar


 
Newmar Owners Club
Join Date: Dec 2015
Location: Wellington, Florida
Posts: 1,104
Do most of our driving on the Florida Turnpike and I rarely see any Motorhome do less then 65-70 MPH and they are usually towing something. Most of the time I'm at 70 to 74 MPH and always drive at that speed, varies because if most traffic is at 75 to 80 they'll pass me and I can stay on CC at my normal driving speed. I've got a 2002 40' Dutchstar pusher. With my AC's on using my generator I've always maintained 6.5 to 7 MPG. I do not tow anything and do all of our trips in Florida. Been doing this since I got the coach, third set of tires a couple years ago.
Dutchstar411 is offline   Reply With Quote
Old 07-04-2019, 04:13 PM   #45
Member
 
Forest River Owners Club
Join Date: Jun 2018
Location: Montgomery TX
Posts: 52
We cruise about 60 mph in the right hand lane. I know many go faster. But our trip is about the journey as well as the destimation and we are comfortable at 60. We also limit our daily progress to about 250-300 miles or six hours max. Try to stop by 4:00 but no later than 5:00 to get camp set up!
Texas John is offline   Reply With Quote
Old 07-04-2019, 04:21 PM   #46
Junior Member
 
Margaritaman's Avatar
 
Winnebago Owners Club
Join Date: Jan 2008
Location: Caddo Mills, TX
Posts: 20
Hmm is this a joke I thought you had a 2002 Cummins 350 mileage was never that good on those and if you are a senior member you should know that. I did not read all your posts so if you upgraded you also should have known better then not to verify before you bought.
Margaritaman is offline   Reply With Quote
Old 07-04-2019, 04:21 PM   #47
Senior Member
 
tjshively's Avatar
 
Alpine Owners Club
Join Date: Aug 2010
Location: Cincinnati, OH
Posts: 272
Did you really think the previous owner just telling you the truth?
No one, absolutely no one tells the truth about their fuel mileage.
I run a Cummins 400HP at 65 and I get 8.0 to 9.0. Mostly 8.4 and that's the truth !!!
tjshively is offline   Reply With Quote
Old 07-04-2019, 04:21 PM   #48
Member
 
National RV Owners Club
Freightliner Owners Club
Join Date: Dec 2008
Posts: 87
I have a diesel pusher, gross weight 33,000 lbs., 400 horse power Cat with the Allison 6 speed automatic. The objective running down the interstate is to keep the transmission in the highest gear (avoiding unnecessary downshifts), and the diesel engine at the lowest rpm that will maintain that highest gear. On my coach, that sweet spot is 62 miles an hour. Above that, the rpm's go up and it sucks more fuel, below that it downshifts to 5th gear on the slightest rise in the road. Towing a 4000 lb. automobile behind it, it gets 7.5 to 8 mpg. I consider that excellent mileage for the weight I'm pushing. A smaller engine might have gotten better mileage, but then I would have been frustrated with it's lack of power. I like my Cat C-9 400 horsepower.
hex nut is offline   Reply With Quote
Old 07-04-2019, 04:21 PM   #49
Junior Member
 
Stephens1509's Avatar
 
Join Date: Jun 2019
Location: Goodyear, AZ
Posts: 2
We have a 2018 Ford V-10 36í gasser and average 6.5-7 typically running at 62-65.
Stephens1509 is offline   Reply With Quote
Old 07-04-2019, 04:22 PM   #50
Junior Member
 
Join Date: Apr 2014
Posts: 22
I think every engine, including my Triton V10, has a favorite cruising speed. For me, pulling a Jeep 4dr, is 64-65. I think the guys with the big diesel pushers can cruise considerably faster without any strain. Rode with a friend to Talladega a couple years ago in a 45' DP and we never went less than 80mph and it felt smooth. Last year he did the same thing and I cruised along at 65 and he was 6 RV's in front of me in line to get on the track. I am fully on board with taking my time and enjoying the journey. Stay safe.
__________________
2018 Thor ACE 29.4
2018 Jeep Wrangler Unlimited
EVMIII is offline   Reply With Quote
Old 07-04-2019, 04:26 PM   #51
Junior Member
 
Join Date: Aug 2015
Posts: 2
Cruising speed

My wife says I get 6,5-8.5 mph on flat Highways (Arizona-New mexico) depending if going 60 or 80..
My advice to new RVíers is donít ask questions about (1) fuel economy & (2) coach expense as answers are always disappointing & frustrating.
I remind my wife that we RV for (1) comfort (2) enjoyment (not economy or efficiency) and donít bother about matters we donít control.

Mr. Re
007 Scepter 38ft 400hp
Mr. Re is offline   Reply With Quote
Old 07-04-2019, 04:26 PM   #52
Junior Member
 
Join Date: Mar 2015
Posts: 20
We have a 2015 palazzo 33.2 300hp Cummins 62 -63 mph 9.6 sometime 10.4
r.davis is offline   Reply With Quote
Old 07-04-2019, 04:28 PM   #53
Member
 
Join Date: May 2016
Location: Green Valley, AZ
Posts: 88
I think 12 mpg was wishful thinking on his part. It amazes me how many people don't know how to calculate mpg, but are stating amazing figures. He was probably getting 8.2 mpg.
What is the speed rating on your tires? Go to https://www.discounttire.com õ Tips & Guides to find out where the speed rating is listed. This is a starting point.
From what I have read, most people run at speeds of 65 to 68 mph. What is comfortable for you? What feels like a good towing speed? Our 2012 Ram 3500 DRW, towing a 37' Montana 5th wheel felt most comfortable at about 68 mph. The tires on re 5th wheel were rated at 81 mph, and the truck tires higher.
How old are your tires? If over 6 years old, you should probably replace them. For most RV's, tire age seems to be the determining factor, not tread depth.
OlJB is offline   Reply With Quote
Old 07-04-2019, 04:30 PM   #54
Junior Member
 
firebird92's Avatar
 
Join Date: May 2014
Location: Amarillo
Posts: 10
Cruising speed

I cruise at 64 mph and mostly use the cruise control. Average 8.8 mpg in a 2015 Winnebago Forza DP, 340 hp. Usually have wind due to being in Texas and seems like everywhere we go the wind is either quartering headwinds or headwinds. No wind we get 9 to 12 mph.
firebird92 is offline   Reply With Quote
Old 07-04-2019, 04:31 PM   #55
Junior Member
 
lrpendant's Avatar
 
Join Date: Jun 2019
Location: Reston, VA
Posts: 9
Have a 2011 Tiffin Allegro Breeze 28BR and the on board avg is 13.5 mpg. I try to maintain 62-65 in the right lane on the highway. Just added a ScanGauge to get a fresh start on the actual mileage.
lrpendant is offline   Reply With Quote
Old 07-04-2019, 04:36 PM   #56
Senior Member
 
Join Date: Nov 2017
Location: Manchester, Tn
Posts: 291
I cruise at 62, that seems to be the sweet spot for my drive train, 8.1L V8 w/Allison transmission 38í Mountain Aire. Do you drive strictly on cruise control? I gently use my foot to raise the power when approaching any kind of grade such as intersections or small hills to keep the cruise control from causing a downshift in the transmission. Best I can do is 10 mpg on FL flat ground, most of the time in normal terrain itís round 8-8.2, the previous owner my have been a used car salesman in the past and you know their reputation for selling cars. Lol
__________________
Robert Pulliam
2002 Newmar Mountain Aire 38í
2017 Chevy Equinox toad
Grandpa5x is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cruising Speed with 454 and 3-Speed Transmission NF6X Vintage RV's 18 05-31-2019 08:46 AM
Class A DP Comfortable Cruising Speed? The Renegade Class A Motorhome Discussions 137 10-24-2018 08:43 PM
Comfort Drive is loose at cruising speed Mikenchelby Newmar Owner's Forum 9 08-29-2018 12:38 PM
Cruising speed with the tow'd hookup? bighatnohors Toads and Motorhome Related Towing 41 07-10-2015 04:02 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:12 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.