RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Entegra Owner's Forum
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 07-04-2020, 10:27 AM   #1
Senior Member
 
Join Date: May 2014
Location: AZ
Posts: 139
Old DEF

Started up the coach and the check engine light came on. Looked up the code (SPN 5742 FMI 4) and found it to be Aftertreatment Diesel Particulate Filter Temperature Sensor Module Voltage Below Normal, Or Shorted To Low Source 4162 (Cummins code). Called local repair shop and was told Cummins would have the software to check it but he then asked me how old the DEF was. I had not be on a trip since December and am in AZ so it is now pretty hot. He told me it was probably bad DEF and to drain it and then put in 5 gallons of fresh (Looked up DEF use by dates on internet) then run it for about 20 miles. I used a long clear plastic tube and my manual pump to draw out the old DEF as the drain plug looked to be to much trouble. Put in 5 gallons of fresh dated DEF. Only drove it about 10 miles and the light went out.

If you have DEF that is stored in the heat (above 90 degrees) it may be good for only three months. Stored at temperatures below 50 degrees it may last for three years but I have been told to get rid of it if it is a year old. I will always use fresh DEF in the future!!
__________________

__________________
Ron S.
2014 Aspire 44U
2006 H3 & 2015 GMC Terrain Denali
ronlin11 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 07-04-2020, 10:35 AM   #2
Senior Member
 
Gary.Jones's Avatar


 
Join Date: Oct 2012
Location: Louisiana
Posts: 7,319
Blog Entries: 1
Ron

I have always heard and read that DEF should be good for ~ 1 year (12 months). Please keep us advised of how things go. I have had that engine code twice and once it was a bad/failing DEF pump and once it was something that I am having trouble remembering at this point, but it was not due to old DEF and required engine/sensor work.

Gary
__________________

__________________
Gary and Dee, Zowie and Bowie (traveling cat sibs)
2019 Cornerstone 45B, X15-605hp, Imperial, Spartan K3,
2013 Honda CR-V toad, Demco Excali-Bar II,
Demco Baseplate, Demco Toad Light system, 73 de W5Fi
Gary.Jones is online now   Reply With Quote
Old 07-04-2020, 11:17 AM   #3
Senior Member
 
Join Date: Nov 2019
Posts: 175
Quote:
Originally Posted by ronlin11 View Post
Started up the coach and the check engine light came on. Looked up the code (SPN 5742 FMI 4) and found it to be Aftertreatment Diesel Particulate Filter Temperature Sensor Module Voltage Below Normal, Or Shorted To Low Source 4162 (Cummins code). Called local repair shop and was told Cummins would have the software to check it but he then asked me how old the DEF was. I had not be on a trip since December and am in AZ so it is now pretty hot. He told me it was probably bad DEF and to drain it and then put in 5 gallons of fresh (Looked up DEF use by dates on internet) then run it for about 20 miles. I used a long clear plastic tube and my manual pump to draw out the old DEF as the drain plug looked to be to much trouble. Put in 5 gallons of fresh dated DEF. Only drove it about 10 miles and the light went out.

If you have DEF that is stored in the heat (above 90 degrees) it may be good for only three months. Stored at temperatures below 50 degrees it may last for three years but I have been told to get rid of it if it is a year old. I will always use fresh DEF in the future!!



My understanding of DEF age is 18 - 24 months if it's stored in a cool place.


My solution is I carry a refractometer and can and do check new DEF and what's in the tank at times. I use SuperTech DEF and it has born on dates on the container and I do store it in a cool place so usually no issues there.


Handy tool, everyone that has DEF storage as much as these coaches have should have one and use it. Only takes a few seconds and would save you a bunch of pain.
__________________
2020 Cornerstone
Quality ? Yeah right.
fqberful is offline   Reply With Quote
Old 07-04-2020, 11:59 AM   #4
Registered User
 
Join Date: Mar 2019
Posts: 1,336
DEF that is stored in a sealed tank/container out of direct sunlight is going to last quite a long time

Many of us have stored DEF equipment over 9 months many times
Milford 47 is offline   Reply With Quote
Old 07-04-2020, 01:50 PM   #5
Senior Member
 
brobox's Avatar


 
Entegra Owners Club
Join Date: Apr 2007
Location: SW FL
Posts: 22,606
Good for the heads up. I just drained my DEF tank yesterday before the trip to NIRVC. My DEF in the tank was over a year old, and stored in hot FL. When I pulled the drain plug, the DEF smell was so strong I couldn't stay under the coach while it drained. I am sure much of the distilled water had evaporated. I am sure the strong concentration of urethra would have plugged the filter or worse.
__________________
Chuck in SW FL
A "Digital" 2019 Cornerstone "B"
A "Classic" 2014 Anthem 42 RBQ---Sold
2016 Colorado Z71 PU
brobox is offline   Reply With Quote
Old 07-04-2020, 11:02 PM   #6
Senior Member
 
DoggieDaddy's Avatar
 
Join Date: Jul 2013
Location: Where ever we park it
Posts: 1,016
Rule of thumb I guess. If you've sat long enough for your DEF to get old, you've sat too long. "Drive 'em like you stole 'em".- Big Mike
__________________
Robert & Holly - "Fulltimers" 6+ years
Schnauzers Augie Doggie and Monty Puppy
2014 Anthem 44B Rad Copper/ 2013 Ford Explorer
DoggieDaddy is offline   Reply With Quote
Old 07-05-2020, 04:38 AM   #7
Senior Member
 
Stu and Sue's Avatar
 
Join Date: Aug 2017
Location: Savannah, TN
Posts: 109
Thanks fqberful for the Refractometer idea.
What reading on the meter do you hope to have?
__________________
Stuart and Susan (Grizabella & Macavity, our imaginary cats)
'12 Entegra Aspire 42DEQ
'94 Jeep Wrangler Toad & '12 Honda Goldwing CSC Trike
Stu and Sue is offline   Reply With Quote
Old 07-05-2020, 06:08 AM   #8
Senior Member
 
brobox's Avatar


 
Entegra Owners Club
Join Date: Apr 2007
Location: SW FL
Posts: 22,606
Quote:
Originally Posted by DoggieDaddy View Post
Rule of thumb I guess. If you've sat long enough for your DEF to get old, you've sat too long. "Drive 'em like you stole 'em".- Big Mike
Trust me, it was not by choice. Sometimes life deals us a card we can't play on. I found out like ronlin11 did, don't let DEF sit to long in hot weather, it can create a side of the road problem. Big Mike is right, these thing are made to be driven, sitting causes problems.
__________________
Chuck in SW FL
A "Digital" 2019 Cornerstone "B"
A "Classic" 2014 Anthem 42 RBQ---Sold
2016 Colorado Z71 PU
brobox is offline   Reply With Quote
Old 07-05-2020, 06:52 AM   #9
Senior Member
 
Join Date: Nov 2019
Posts: 175
Quote:
Originally Posted by Stu and Sue View Post
Thanks fqberful for the Refractometer idea.
What reading on the meter do you hope to have?



I expect to see 32.5% +- 1% .. If out of that range it's not so good.


I have never had an issue with DEF out of spec in many years. I store it in a cool place and in Central FL here it does get pretty hot.


Cornerstone uses so much I doubt it will ever get a chance to get stale.
__________________
2020 Cornerstone
Quality ? Yeah right.
fqberful is offline   Reply With Quote
Old 07-05-2020, 07:14 AM   #10
Senior Member
 
grindstone01's Avatar
 
Join Date: Oct 2017
Location: FULL TIMERS
Posts: 4,731
Quote:
Originally Posted by fqberful View Post
My understanding of DEF age is 18 - 24 months if it's stored in a cool place.


My solution is I carry a refractometer and can and do check new DEF and what's in the tank at times. I use SuperTech DEF and it has born on dates on the container and I do store it in a cool place so usually no issues there.


Handy tool, everyone that has DEF storage as much as these coaches have should have one and use it. Only takes a few seconds and would save you a bunch of pain.

If you have a refactometer, it might be a good idea to occasionally dip some DEF out of your vehicle tank to verify it is not going bad.
Generally DEF should store for a year or more, but there will always be exceptions.
__________________
2018 Chevy DRW
2008 Carriage Cameo, F34CK3
Full Time since 2012
grindstone01 is offline   Reply With Quote
Old 07-05-2020, 09:27 AM   #11
Registered User
 
Join Date: Mar 2019
Posts: 1,336
Quote:
Originally Posted by brobox View Post
Good for the heads up. I just drained my DEF tank yesterday before the trip to NIRVC. My DEF in the tank was over a year old, and stored in hot FL. When I pulled the drain plug, the DEF smell was so strong I couldn't stay under the coach while it drained. I am sure much of the distilled water had evaporated. I am sure the strong concentration of urethra would have plugged the filter or worse.
It would have been interesting if you had tested it to see what the concentration showed

Urea is very water soluble and only crystalizes when dried out and in direct contact with the atmosphere

It is simply 32% Urea and pure water, RO permeate ran through a mixed bed poisher
Milford 47 is offline   Reply With Quote
Old 07-05-2020, 10:26 AM   #12
Senior Member
 
brobox's Avatar


 
Entegra Owners Club
Join Date: Apr 2007
Location: SW FL
Posts: 22,606
Quote:
Originally Posted by Milford 47 View Post
It would have been interesting if you had tested it to see what the concentration showed

Urea is very water soluble and only crystalizes when dried out and in direct contact with the atmosphere

It is simply 32% Urea and pure water, RO permeate ran through a mixed bed poisher
I was wishing I had a refactometer, it's one of those I am always going to get and never do items.


I am only going by how strong the odor was on the DEF being drained. I could not breathe laying under the coach. Took the lid off a new jug, no problem at all with the smell. It's one of those times you go by smell and my DEF was bad smelling to the point it was unbreathable fumes. The DEF in my tank was 2 years old.
__________________
Chuck in SW FL
A "Digital" 2019 Cornerstone "B"
A "Classic" 2014 Anthem 42 RBQ---Sold
2016 Colorado Z71 PU
brobox is offline   Reply With Quote
Old 07-05-2020, 10:37 AM   #13
Senior Member
 
Join Date: May 2017
Posts: 2,161
I think there’s too much hype about DEF going bad. I had for several years set in Fl for up to 9 months with a full tank of DEF and never had a problem. Last year I ran the tank down low, end of Sept,, and didn’t refill it until we left Fl end of May. I don’t doubt if left out in the sun in the container it will go bad, but inside of a couple years in the Mh I doubt it will cause a problem. I have checked mine that’s close to a year old, with a refractometer, and it always shows right on 32%.
My pickup says refill DEF tank every 10,000 miles with no reference to time. Maybe they think everyone drives more than 10,000 a year, but 10,000 miles will take me over a year. JMHO
__________________
J.H. 2020 45W Cornerstone
2020 Ram Limited eco diesel
Rollin101 is offline   Reply With Quote
Old 07-05-2020, 11:16 AM   #14
Senior Member
 
Join Date: Sep 2010
Posts: 3,526
When we were trying to cut the heat down in the engine area to keep the coach cooler in the rear we wrapped the exhaust system with heat shields. By the DEF tank put a lot of extra heat shielding around the DEF tank to keep the heat around tank cooler so that fluid won't be getting 130 to 140 degrees. Cut the temp down by 30 degrees in engine compartment with exhaust and turbo heat shields. Added to extra 12 volt electric fan also so when stopped for the day turn the fans on the pull the heat out of engine compartment for 15 or so minutes.
__________________

__________________
Tom/Teri 16031 NKK 117995 FMCA
18 London Aire 4531 Spartan K-3 605
97-04 LA 04-18 Essex 2018 London Aire
tom chelbana 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
DEF ON Def Off notice brianjoan Sprinter Chassis Forum 3 11-29-2017 08:11 PM
DEF consumption or MPG of DEF? erstanfo Class A Motorhome Discussions 16 03-13-2016 02:00 PM
DEF Or No DEF TeresaOwen1 iRV2.com General Discussion 46 12-07-2014 07:00 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 12:43 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×