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.
  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 09-27-2011, 08:14 PM   #43
Senior Member
DA_BUS's Avatar
Join Date: Sep 2011
Location: SE Minnesota
Posts: 339
We are on our second diesel pusher and been around trucks all my life - still have 5 tractor trailers in our fleet.....engines that are made to run over a half a million miles before any work on them needs to be performed are going to survive a lot longer than the everyday issues the other parts of the coach will bring up. Make sure the coach drive train has been mantained regularly and focus more on the rest of the coach. Cummins and Allison (and the other brands) are made for the long haul and are built to take it - these manufacturers are not slouches....if the motor and transmission has been developed in over the road tractors that pull 80,000 pounds day in and day out - the drive train would be the last of my concerns. Make sure the drive train has some consistent activity - not high mileage - but started and used enough on a regular basis to keep things lubed and in working condition....you are never going to be able to second guess if you have bought a "bad" driveline until it happens or previous service records reveal it....so "buy one" and enjoy!

DA_BUS 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 10-02-2011, 08:11 PM   #44
Senior Member
RVNeophytes2's Avatar
Monaco Owners Club
Join Date: Jan 2011
Posts: 943
Blog Entries: 1
Chemical Aspect of Oil Change Interval

Originally Posted by Pairajays View Post

Annual oil changes, without substantial milage, is not required, IMO.
Is this true in diesels? As an airplane mechanic, I stress annual oil changes as the very least; six months is often preferable. The reason is that your oil protects in two ways: mechanically, by definition; and, chemically by maintaining a protective coating on surfaces inside your engine. With the introduction of moisture, acids form, the protective role is compromised, and engine life is shortened.

Cummins, in their bulletin entitled Cummins® Engine Oil and Oil Analysis Recommendations, says the same thing: Oil provides a protective barrier, isolating non-like metals to prevent corrosion. Corrosion, like wear, results in the removal of metal from engine parts. Corrosion works like a slow acting wear mechanism. These are the engineers who built your engines, who gain nothing if you shorten your oil change interval. But, they don't quantify the amount of wear nor do they address environmental variables.

Now, in jumps the State of California, which says you can optimize wear by using premium oil and high efficiency filters, coupled with extended change intervals. Their findings are HERE. Does the same thing apply in Ohio, Florida or Michigan? I have no idea.

What do our professional diesel mechanics think?

RVNeophytes2 is offline   Reply With Quote
Old 10-03-2011, 12:03 AM   #45
phredsee's Avatar
Winnebago Owners Club
Freightliner Owners Club
Join Date: Nov 2008
Location: Palm Desert, CA
Posts: 79
Send a message via Yahoo to phredsee
We found a specific model motor home we were looking for but it had 10,000 on the motor with 410 hours on the generator, go figure. No service records as this was a bank repo bought by the dealer at a lower price. We also realized that tires would have to be replaced and all systems tested, including liquid analysis, outside Cat dealer verified the motor, including the Alison transmission. No service codes and some work done to brackets for safety underneath.
We set aside about $10,000 for any repairs we might have that didn't show at time of purchase, excluding tires and shocks.

After we purchased, we had all fluids replaced on the engine, transmission and radiator. Most hoses replaced. We had no service records so I felt we needed a starting point for current usage and future service requirements.

Things that have already gone wrong were (2) coach batteries needed replacing, roof sealant brokedown on trip with entire left side lifting up but luckily repaired, (2) leaking windows I corrected and some other minor problems that were easily fixed. The jacks need to be serviced and plan on doing that shortly.

Bottom line is depending on how far back in years you go and as others have said, buying used is an unknown factor unless you have reputable service records, plan on spending some bucks along the way.

So far we are happy with our decision on buying a higher end coach and with continuing preventive maintenance, we have expectations it will last a long time.

Good luck in your search and get what you want but practice the caveat emptor thing.

2008 Itasca Meridian
2010 Ford Sport Trac
phredsee 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
Diesel Okay for short trip of 10 miles? adehaan86 Powerstroke Engine Forum 18 03-26-2011 07:27 AM
MaxxForce™ Engines Brings Diesel Choice to Workhorse Chassis Platforms DriVer Navistar MaxxForce Engine Forum 0 02-18-2009 04:45 PM
MaxxForce7 Engine Brings Diesel Choice to Popular Workhorse Platform DriVer Workhorse and Chevrolet Chassis Motorhome Forum 50 12-10-2008 05:29 AM
Low Sulfur Diesel (LSD) Cayman Dave MH-General Discussions & Problems 7 10-16-2007 04:18 PM
Can you find DIESEL FUEL for your 2007 on the road? Don G MH-General Discussions & Problems 6 01-24-2007 02:55 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:48 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.