RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar 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 05-16-2018, 12:09 PM   #1
Senior Member
 
Join Date: Sep 2010
Posts: 2,513
Information on DEF and gear oil change

After getting our 1st Newmar that uses DEF learned a couple items that wanted to share with irv2 Newmar owners. DEF has a 6 months shelve life so large purchases wouldn't be a wise idea. Aged DEF can cause problems for engine and check engine light coming on. Be careful when purchasing DEF that the security seal isn't broken or missing. There have been diesel owners who have found that DEF seal missing and filled with water that appears was returned to store for refund.
If replacing rear end gear oil the best gear oil is specification SAE J2360. Just as you should purchase SAE TES-295 automatic transmission for your Allison Trans.
__________________

tom chelbana 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 05-16-2018, 01:08 PM   #2
Senior Member
 
Algoma's Avatar
 
Join Date: Nov 2007
Location: Charleston, WV
Posts: 2,955
Quote:
Originally Posted by tom chelbana View Post
After getting our 1st Newmar that uses DEF learned a couple items that wanted to share with irv2 Newmar owners. DEF has a 6 months shelve life so large purchases wouldn't be a wise idea. Aged DEF can cause problems for engine and check engine light coming on. Be careful when purchasing DEF that the security seal isn't broken or missing. There have been diesel owners who have found that DEF seal missing and filled with water that appears was returned to store for refund.
If replacing rear end gear oil the best gear oil is specification SAE J2360. Just as you should purchase SAE TES-295 automatic transmission for your Allison Trans.
Have to disagree with the 6 month DEF number. Here is a quote from one of the DEF manufacturers:

"TerraCair ultrapure diesel exhaust fluid has a shelf life that is a function of average storage temperature and time. Between average storage temperatures of 68° F and 86° F, TerraCair has a shelf life of 12 - 48 months. Below 68° F, the shelf life of TerraCair is virtually unlimited. TerraCair will freeze at 12° F, but thaws quickly without deterioration. This data was developed by Terra's Technical Service and Product Development Lab."

I use Mobil Delvac Synthetic Gear Oil in my axle, which complies with J2360. The big advantage is you change the oil less frequently.
__________________

__________________
John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
Algoma is offline   Reply With Quote
Old 05-16-2018, 01:29 PM   #3
Senior Member
 
C.Martin's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Aug 2015
Posts: 1,965
Good stuff...
Attached Thumbnails
Click image for larger version

Name:	20171102_095529.jpg
Views:	34
Size:	208.1 KB
ID:	202973  
__________________
Charlie & Ronni
2016 Ventana 4037
C.Martin is offline   Reply With Quote
Old 05-16-2018, 04:16 PM   #4
Senior Member
 
Join Date: Mar 2017
Location: phx , Az
Posts: 455
Quote:
Originally Posted by Algoma View Post
Have to disagree with the 6 month DEF number. Here is a quote from one of the DEF manufacturers:

"TerraCair ultrapure diesel exhaust fluid has a shelf life that is a function of average storage temperature and time. Between average storage temperatures of 68° F and 86° F, TerraCair has a shelf life of 12 - 48 months. Below 68° F, the shelf life of TerraCair is virtually unlimited. TerraCair will freeze at 12° F, but thaws quickly without deterioration. This data was developed by Terra's Technical Service and Product Development Lab."
.
Did they happen to list shelf life for above 86 ?
Here in the phx. desert some nights don't get that low....
__________________
The world could be fair or round
06 Gulfstream Conquest Super C - 6340 8.1 Gas
17 Renegade Verona 36 VSB (Cummins ISL/M2 Chassis) 4 x 100ah AGM , 400w solar, ScanGaugeD
deputybubba is offline   Reply With Quote
Old 05-17-2018, 03:39 PM   #5
Member
 
2BU Bears's Avatar
 
Newmar Owners Club
Texas Boomers Club
Freightliner Owners Club
Join Date: Jul 2015
Location: Houston, Texas
Posts: 61
Ever since the topic of DEF having a short shelf life has been discussed, I have been trying to find an expiration date printed on the DEF that i am purchasing. I have not been able to determine an expiration date on any of the Blue DEF product that I have purchased. Does anyone know how to find out he expiration date of a specific container of DEF?
__________________
Larry & Nancy Harn plus Yorkies- Maggie & Baxter
2015 Dutch Star 4366, HWH Active Air, Silverleaf Glass Dash 755, RO Water System
2015 Jeep Wrangler Unlimited- Blue Ox
2BU Bears is offline   Reply With Quote
Old 05-17-2018, 04:29 PM   #6
Senior Member
 
Ann n Gene's Avatar
 
Join Date: Apr 2004
Location: Stillwater, Ok
Posts: 4,030
Information on DEF and gear oil change

I really don’t worry about shelf life if you routinely avoid extremely high temps. It is really not a new product, we used it for fertilizer at least 50 years ago and called it Urea. Percent formulation could vary from 28% to 32% but otherwise same product and about the only thing that affected it was it tended to evaporate to some degree during very hot weather and you could then find some of the white crystals on the equipment. The product we now call DEF likely uses purer water to dilute the Urea to the proper 31.5% formulation and is hopefully handled more carefully to keep contaminants out of it. All JMHO
__________________
2019 Newmar New Aire
2017 Ford F150 King Ranch
Ann n Gene is online now   Reply With Quote
Old 05-17-2018, 05:40 PM   #7
Senior Member
 
Aegon's Avatar
 
Newmar Owners Club
Freightliner Owners Club
Join Date: Sep 2017
Location: NorCal
Posts: 433
Quote:
Originally Posted by deputybubba View Post
Did they happen to list shelf life for above 86 ?
Here in the phx. desert some nights don't get that low....
At camp Freightliner, we were taught that heat is the enemy of DEF. In very hot regions like Phoenix & Las Vegas, life span can be less than 6 months. In moderate regions, expect to get 18 months life span. It was emphasized to manage your DEF tank level based on your usage. Get to know your system and maintain the tank level based on planned usage.

The freeze point mentioned before is accurate and frozen DEF is not harmed—no deterioration.
__________________
Alan
2018 New Aire 3343
DW Lilfoot
Aegon is offline   Reply With Quote
Old 05-18-2018, 09:26 AM   #8
Senior Member
 
Join Date: Oct 2017
Location: Full Timing From SW Florida
Posts: 668
Back in 2012 when I had my first diesel requiring DEF the same issues seemed to come up reference aging out.

I never ran my DEF tank all the way down before filling it up just in case I did add some substandard DEF. I like to run it down to between 1/4 and 1/2 before adding.
__________________
2017 Newmar 4369 Ventana
Winters in SW Florida - the rest of the time exploring this great country!
FLJOE is offline   Reply With Quote
Old 05-18-2018, 12:25 PM   #9
Senior Member
 
Idleup's Avatar
 
Join Date: Jun 2011
Posts: 625
Quote:
Originally Posted by Aegon View Post
At camp Freightliner, we were taught that heat is the enemy of DEF. In very hot regions like Phoenix & Las Vegas, life span can be less than 6 months. In moderate regions, expect to get 18 months life span. It was emphasized to manage your DEF tank level based on your usage. Get to know your system and maintain the tank level based on planned usage.

The freeze point mentioned before is accurate and frozen DEF is not harmed—no deterioration.

Seems Goofy that for a fluid that deteriorates with hot temperatures that Newmar and other manufactures would store the DEF tank perfectly situated in the hottest position on the bus, right alongside the radiator and adjacent the hot engine.

I'm certainly not a emission engineer, but its my guess the myth of the fluid breaking down in 6 months is mostly fake news from the companies who sell it. You certainly won't be seeing me dumping or changing fluid for expiration reasons.

Regards
Attached Thumbnails
Click image for larger version

Name:	Screen Shot 2018-05-18 at 1.18.08 PM.jpg
Views:	27
Size:	433.0 KB
ID:	203192  
Idleup is offline   Reply With Quote
Old 05-18-2018, 02:27 PM   #10
Senior Member
 
Aegon's Avatar
 
Newmar Owners Club
Freightliner Owners Club
Join Date: Sep 2017
Location: NorCal
Posts: 433
Quote:
Originally Posted by Idleup View Post


I'm certainly not a emission engineer, but its my guess the myth of the fluid breaking down in 6 months is mostly fake news from the companies who sell it. You certainly won't be seeing me dumping or changing fluid for expiration reasons.
You’d be surprised, I certainly was. We had a 3,000 gallon tank of bleach at work that sat idle for 9 months (black poly tank outdoors in Calif.). When I tested it for concentration, it was a 0. I thought my portable meter was broken, so I took a sample back the the lab and got the same result on a better instrument. I called the manufacturer and they verified my result, the deterioration was real.

The Urea in DEF is volatile and will need to be actively managed in hot climates. I’m with you regarding not dumping DEF, but I plan to be smart about what volume I carry in my tank.
__________________
Alan
2018 New Aire 3343
DW Lilfoot
Aegon is offline   Reply With Quote
Old 05-18-2018, 02:42 PM   #11
Senior Member
 
Idleup's Avatar
 
Join Date: Jun 2011
Posts: 625
Quote:
Originally Posted by Aegon View Post
You’d be surprised, I certainly was. We had a 3,000 gallon tank of bleach at work that sat idle for 9 months (black poly tank outdoors in Calif.). When I tested it for concentration, it was a 0. I thought my portable meter was broken, so I took a sample back the the lab and got the same result on a better instrument. I called the manufacturer and they verified my result, the deterioration was real.
Quote:
Originally Posted by Aegon View Post
The Urea in DEF is volatile and will need to be actively managed in hot climates. I’m with you regarding not dumping DEF, but I plan to be smart about what volume I carry in my tank.
Aegon,

Thanks for the update - see now we have an absolute good reason to use our RV's more often, so our DEF does not expire! LOL

While I have not kept track of how much DEF I put in my tank on my NA, I can tell ya it seems I'm dumping gallons and gallons, this thing is sucking it down quickly. Has anyone been gauging how much they are using verses how much they should be using?

Mike

Idleup is offline   Reply With Quote
Old 05-18-2018, 03:16 PM   #12
Senior Member
 
wepinegar's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: May 2011
Location: Mound, MN
Posts: 176
Yes Idleup, About 4% on my VT. I had been told to expect filling once or twice per year and was quite surprised at what I saw when I took my first trip this year. I then read in this forum that changes were made in 2018 to meet new standards and caused an increase in usage. I don't mind but as others have noted, increasing the amount used with no change in tank capacity may not be the smartest thing to do. But on the way back from OH I intentionally calculated the usage and was right on 4%!
__________________
Bill & Becky Pinegar
2018 Newmar Ventana 3709
2016 Fiat 500 Sport
wepinegar is offline   Reply With Quote
Old 05-18-2018, 03:31 PM   #13
Member
 
BodieJames's Avatar
 
Spartan Chassis
Join Date: Nov 2015
Location: Shorewood, IL
Posts: 86
Quote:
Originally Posted by 2BU Bears View Post
Ever since the topic of DEF having a short shelf life has been discussed, I have been trying to find an expiration date printed on the DEF that i am purchasing. I have not been able to determine an expiration date on any of the Blue DEF product that I have purchased. Does anyone know how to find out he expiration date of a specific container of DEF?
There are YouTube videos on the expiration code on DEF. There is a code that you can read to find the date it was made. Code xxxx2018124. xxxx is batch, then subtract 1year from this date (2017), 124 is the Julian calendar day.
__________________
Jim & Kathy
2018 Dutch Star 4369 K2
Toad- 2014 Honda CRV
BodieJames is offline   Reply With Quote
Old 05-18-2018, 03:47 PM   #14
Member
 
BodieJames's Avatar
 
Spartan Chassis
Join Date: Nov 2015
Location: Shorewood, IL
Posts: 86
Click image for larger version

Name:	A21E3B38-6F6E-4DD5-80B3-4B212F23F802.jpg
Views:	22
Size:	436.2 KB
ID:	203264


Here is the code from my last Blue DEF box. To correct my previous post.

CP19312 7 0142...(19-1=18) made in 2018. On the Julian date of 312= Nov 8...0142 is batch #.
__________________

__________________
Jim & Kathy
2018 Dutch Star 4369 K2
Toad- 2014 Honda CRV
BodieJames 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
Price for engine Oil change and transmission oil change fastwhls Winnebago Industries Owner's Forum 43 02-28-2018 10:46 AM
DEF ON Def Off notice brianjoan Sprinter Chassis Forum 3 11-29-2017 09:11 PM
DEF consumption or MPG of DEF? erstanfo Class A Motorhome Discussions 16 03-13-2016 03:00 PM
DEF Or No DEF TeresaOwen1 iRV2.com General Discussion 46 12-07-2014 08:00 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:32 PM.


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