Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines
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 11-11-2022, 10:25 AM   #1
Member
 
Ultrarex09's Avatar
 
Join Date: Sep 2013
Posts: 56
DEF Fluid Life

Looking at purchasing a 2017 Newmar On a freight liner chassis from a private party.It has a isb6.7L.
Itís a 360 hp. It had the majority of the 3400 miles during the first year. The last 4 years been parked mostly. There has not been any def added to tank last 3-4 years. Itís 1/2 full. I drove it several miles runs great no warning lights. Thoughts on damaging the engine operating it this way?
Thanks
Rex
__________________
2006 HR ADMIRAL SE
F53 V10 CHASSIS
2015 Master Tow
Ultrarex09 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 11-11-2022, 10:44 AM   #2
Senior Member


 
Join Date: Aug 2011
Posts: 5,635
I would siphon all the DEF out of the tank and refill with new fresh DEF.
pasdad1 is online now   Reply With Quote
Old 11-11-2022, 01:13 PM   #3
Senior Member
 
Ray,IN's Avatar
 
Join Date: Aug 2001
Location: North America somewhere
Posts: 27,995
Blue Sky DEF information page: https://blueskydefna.com/know-the-sh...exhaust-fluid/

From reading the article, if DEF changes color it must be replaced regardless of age.
Then this pdf from motorcraft.com: https://www.motorcraft.com/content/d...%20Quality.pdf


And Cumminsfiltration.com:https://www.cumminsfiltration.com/si...es/MB10033.pdf
__________________
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Ray,IN is offline   Reply With Quote
Old 11-12-2022, 04:01 PM   #4
Senior Member
 
Join Date: Nov 2013
Location: Elko, Nv
Posts: 2,190
Bad def will not damage the engine and the fact that you drove it and eveything was fine should tell you its ok. If it was me i would top off the def and enjoy the ride.
NevadaNick is offline   Reply With Quote
Old 11-12-2022, 05:09 PM   #5
Senior Member
 
Newmar Owners Club
Entegra Owners Club
Join Date: Dec 2015
Posts: 1,198
NevadaNick is correct that out-of-spec DEF will not harm your engine, mainly because DEF never gets near your engine. The DEF is injected into the exhaust stream after the Diesel Particulate Filter.
BUT starting in 2016 the EPA began requiring the manufacturers to install a sensor to monitor the quality of DEF and if it strays too far from the ideal of 32.5% Urea the EPA requires the engine to be derated beginning almost immediately and increasing in severity until the coach is limited to 5MPH unlike the problem is corrected.
This summer I ran a test. I filled my DEF tank with fresh fluid in early May, drove it from AZ to AL where it was parked in temperatures of 90+ Until late August and I measured the fluid with a refractometer every week. The reading stayed steady at 32.5% until the very last week of August then it dropped to 31.5% in one week. Cummins has said that the limits are +/- 0.7% so I drained it and refilled with fresh fluid. While I hated to dump the 8 gallons or so of fluid because it was expensive, it just wasn’t worth the hassle of having a problem on the road. Apparently DEF goes bad very slowly and then all at once.
So my recommendation is if in doubt measure it and if it isn’t 32.5% urea then replace it. If you can’t measure it then replace it anyway proactively.
__________________
2021 Entegra Aspire 44W
Previous: 2006 Newmar Essex 4508
2013 Tiffin Allegro Open Road
Archer2 is offline   Reply With Quote
Old 11-13-2022, 11:24 AM   #6
Senior Member
 
Toribk's Avatar
 
Join Date: Oct 2011
Posts: 853
I would err to the side of caution and siphon out all the old DEF in the tank and change the DEF dosing filter as well.
Toribk is online now   Reply With Quote
Old 11-13-2022, 11:37 AM   #7
Senior Member
 
Join Date: Sep 2018
Posts: 249
DEF degrades faster with higher temps, if you can keep the DEF in the 45 to 75į temp range, the DEF could last a couple years.

When DEF gets in to 80į plus range and higher, for a long period of time the faster the stuff degrades.

Three or four years?? I'd be dumping whats there and replace with fresh stuff
Jmac00 is offline   Reply With Quote
Old 11-13-2022, 06:51 PM   #8
Member
 
Ultrarex09's Avatar
 
Join Date: Sep 2013
Posts: 56
Thanks everyone for your input. If I get the coach I will
Remove the old and filter also. Add all new.
Thanks again,
Rex
__________________
2006 HR ADMIRAL SE
F53 V10 CHASSIS
2015 Master Tow
Ultrarex09 is offline   Reply With Quote
Old 11-15-2022, 11:39 AM   #9
Senior Member
 
Newmar Owners Club
Entegra Owners Club
Join Date: Dec 2015
Posts: 1,198
Changing the fluid is wise but I’m not so sure that changing the filter is necessary. I think the only problems that you could have that would be the fault of the filter would be a restriction of flow and corresponding low DEF pressure but that would depend on how much DEF it has had run through it. That’s assuming that the filter has not physically deteriorated and fallen apart from age.
Even if the filter contained a tiny amount of out of spec fluid it wouldn’t cause any problem at all.
__________________
2021 Entegra Aspire 44W
Previous: 2006 Newmar Essex 4508
2013 Tiffin Allegro Open Road
Archer2 is offline   Reply With Quote
Old 11-19-2022, 10:59 PM   #10
Senior Member
 
Join Date: Mar 2005
Location: Northern Oklahoma
Posts: 5,042
Where or how do you get rid of the old DEF after draining the tank? Couple years ago I drained about 5-6 gallon of what I thought might be old DEF from setting 2 years through lack of travel due to Covid and thought since Eura is good fertalizer I sprayed some over spots in the back yard. Wrong. Too strong and burnt a couple patches about 5'x6'.

Now wondering how to get rid of it if task comes up again.
__________________
2015 Dutch Star 4018
2017 Jeep Wrangler Sahara
wagonmaster2 is offline   Reply With Quote
Old 11-20-2022, 08:34 AM   #11
Senior Member
 
dbircky's Avatar
 
Monaco Owners Club
Solo Rvers Club
Coastal Campers
Join Date: Mar 2020
Posts: 1,448
Quote:
Originally Posted by wagonmaster2 View Post
Where or how do you get rid of the old DEF after draining the tank? Couple years ago I drained about 5-6 gallon of what I thought might be old DEF from setting 2 years through lack of travel due to Covid and thought since Eura is good fertalizer I sprayed some over spots in the back yard. Wrong. Too strong and burnt a couple patches about 5'x6'.

Now wondering how to get rid of it if task comes up again.


Pour it down the drain. Itís urea and water. Same stuff as the millions of gallons flushed everyday.
__________________
2009 Monaco Camelot 42PDQ
2011 JK
dbircky is offline   Reply With Quote
Old 11-20-2022, 10:56 AM   #12
Senior Member
 
Newmar Owners Club
Entegra Owners Club
Join Date: Dec 2015
Posts: 1,198
If you want to use it for fertilizer instead of pouring it down the storm sewer, the urea concentration for fertilizer by weight is 0.5% to 2%. The automotive stuff is 32.5% urea. So just dilute it by adding somewhere between 16.5 to 65 gallons of water per gallon of automotive DEF. I don’t know if it would be worth the trouble but it’s doable.
__________________
2021 Entegra Aspire 44W
Previous: 2006 Newmar Essex 4508
2013 Tiffin Allegro Open Road
Archer2 is offline   Reply With Quote
Old 12-04-2022, 09:15 PM   #13
Senior Member
 
Join Date: Mar 2005
Location: Northern Oklahoma
Posts: 5,042
ad

Understand, thank you. would be a lot of trouble deluting 5-10 gallons of DEF to spread on yard.
__________________
2015 Dutch Star 4018
2017 Jeep Wrangler Sahara
wagonmaster2 is offline   Reply With Quote
Reply

Tags
fluid



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
RV Life Trip Wizard and RV LIFE App updates you may have missed Sue46 RV LIFE Trip Wizard - Trip Planner Topics 0 10-12-2022 04:58 PM
Life / Life Span of a VGT Turbo Jimbob1058 Cummins Engines 9 10-02-2022 05:15 PM
RV Life (Gypsy Life) WillHaze86 New Member Check-In 3 07-20-2021 08:33 PM
From Island life to TT life Np206 New Member Check-In 4 10-31-2017 07:45 PM
A diet to save your life and change your life.... Scooter Just Conversation 14 02-09-2012 09:56 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 12:39 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.