Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 01-09-2011, 01:15 PM   #15
Senior Member
lonestarace's Avatar
Join Date: Dec 2009
Location: TX
Posts: 722
MPG Update

Last Oct., when I bought our 450hp Cummins M11 powered 42' tag axle 98 Signature, I drove it from Montana to TX. It averaged 10.1 mpg @ 60 mph @ 36,000 lbs(no toad).

We recently made a 13 day 2000 mile roundtrip in it, from San Antonio @ 1000' above sea level to Leadville, CO. @ 10,200 asl. We towed our 4000+ Lb Toyota. We weighed 42K+ Lbs and drove @ 60 mph. We had a headwind all the way up, and no wind going home. We used the AquaHot during the whole trip, though it was supplemented by electric heaters while at the RV park in Leadville. I have no way of determining how much fuel the AquaHot used.

Driving 1000 miles to Leadville and 11 days of camping at temps as low as -20 we avg 7.0 mpg.

Driving 1000 miles home to TX and 2 days of camping at temps as low as +15, we avg 8.1 mpg.

Conclusion: Weight and headwind kills mpg. DUHHHH!!!

We hope this helps?

Don, Lisa, Alexa, and our 3 doggie amigos.

CURRENTLY MOTORHOMELESS!-Past MHs: 02 Monaco45'Sig,00Monaco43'Sig,99Monaco42'Exec,98Mona co42'Sig,98Newmar38'DSDP(pictured),88FW26'Jamboree .
lonestarace 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 01-11-2011, 10:07 AM   #16
Senior Member
Join Date: Apr 2004
Posts: 343
Truthfully there are too many variables to state anything but average fuel used over the total distance driven. Thus the term average mpg may include windy trips ,heavy traffic stop and go, hilly roads and flat land roads,heavy and light loadings. Alladin keeps records on miles,gallons,hours that will give a better number for comparison. I would discount any individual trip numbers as a accurate measure of performance.

Oh-one is offline   Reply With Quote

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
Cummins Produces 26,000th EPA 2010 Engine DriVer RV Industry Press 0 08-24-2010 11:23 AM
Cummins Keeps the Ram RustyJC Cummins Engines 2 02-16-2010 08:03 PM
Cummins steps up JFC Monaco Owner's Forum 1 12-25-2009 08:56 AM
Cummins ISL Engine Recall brrving Cummins Engines 5 07-03-2007 10:05 AM
Cummins MPG Guide sawtooth Trailer Towing and Tow Vehicles Discussion 1 08-01-2005 04:58 AM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:58 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.