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

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 10-05-2022, 10:51 PM   #1
Senior Member
 
Brand: Thor Motor Coach
Model: 24TF Compass / Mercedes
State: New York
Posts: 191
THOR #17969
Warning: Rotella def, don't buy or use

Over the summer I bought some Shell Rotella DEF fluid and thought I got a good deal since it was on sale at my local Runnings store. I topped my tank while winterizing the Sprinter. I thought I'd also mark the remaining container contents with the disposal date. Long story short the date code could not be decoded so I called Shell and found out they had a third party provide the fluid to them (they don't yet manufacture it themselves) and it got marketed without them having any clue how to decode the manufacturing date! Thus, they had no idea how long it was on the shelf and suggested just disposing of it. Pressing them on reimbursement was useless. So I siphoned the tank and got some new Peak Blue DEF. Lesson learned, you get what you pay for.



Side rant: WTH is wrong with marking a simple manufacturing date on this stuff like other products, rather than using the Julian calendar to figure out when it was made?? What a PITA.

__________________
Edensob is offline   Reply With Quote
Old 10-06-2022, 12:40 AM   #2
Senior Member
 
simidrm's Avatar
 
Brand: Thor Motor Coach
Model: Tuscany 40ex
State: Ohio
Posts: 313
THOR #12726
I carry a def refractor in the motor home or my p/u when fueling you can put a small sample on the refractor and it will tell you if the def fluid meets minimum requirements of 32.5. % urea, I got mine from Amazon and it also does coolant, def, washer fluid, battery acid and it was about 20.00 just check it because they sell them in Celsius or Fahrenheit, I have never seen def fluid go bad from age, but the vehicles I work on don’t set long enough for that.
__________________
simidrm is offline   Reply With Quote
Old 10-06-2022, 12:45 AM   #3
Senior Member
 
Brand: Thor Motor Coach
Model: Freedom Traveller A27
State: North Carolina
Posts: 1,623
THOR #17765
WTH! DEF is ammonia. Urea. Old. Hell I used whatever in my F350 dually. Probably could piss in the DEF tank and make it work. Ford would not reset unless you completely filled it. I was sorry I got rid of my Ď01 F250 with the 7.3.
__________________
Jimbo56 is offline   Reply With Quote
Old 10-06-2022, 01:00 AM   #4
Senior Member
 
The Gritz Carlton's Avatar
 
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 4,865
THOR #11130
It was "on sale" for a reason. If diesel sells, DEF sells along with it. Don't buy DEF from a retailer that doesn't sell a train load of diesel daily, such as truck stops. Taste it...if it tastes like piss, it's good. If it tastes like water, don't use it.
__________________
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
The Gritz Carlton is offline   Reply With Quote
Old 10-06-2022, 01:25 AM   #5
Senior Member
 
Brand: Thor Motor Coach
Model: 24TF Compass / Mercedes
State: New York
Posts: 191
THOR #17969
good point Gritz
__________________
Edensob is offline   Reply With Quote
Old 10-06-2022, 01:58 AM   #6
Senior Member
 
Judge's Avatar
 
Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 3,717
THOR #12751
I have bought DEF from Tractor Supply, Rural King, WalMart, Convenience Stores, etc. I have DEF that has sat a year in my temperature controlled garage before it got used.

I have run it my 2018 GMC Canyon Denali, my 2021 GMC Sierra AT4 and my 2020 Magnitude SV34.

I've never had an issue in any of my vehicles.

Just saying.......
__________________
Judge is offline   Reply With Quote
Old 10-06-2022, 02:50 AM   #7
Senior Member
 
MJC62's Avatar
 
Brand: Thor Motor Coach
Model: A.C.E. 27.2
State: Indiana
Posts: 1,487
THOR #14698
[QUOTE=The Gritz Carlton;..."if it tastes like piss, it's good."

Now that there is funny !!
__________________
2018 ACE 27.2
Toad 2019 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain Towbar
Roadmaster Invisibrake
MJC62 is offline   Reply With Quote
Old 10-06-2022, 06:19 PM   #8
Senior Member
 
Brand: DRV
Model: Mobile Suites 36RSB3
State: Florida
Posts: 203
THOR #17449
Quote:
Originally Posted by Judge View Post
I have bought DEF from Tractor Supply, Rural King, WalMart, Convenience Stores, etc. I have DEF that has sat a year in my temperature controlled garage before it got used.

I have run it my 2018 GMC Canyon Denali, my 2021 GMC Sierra AT4 and my 2020 Magnitude SV34.

I've never had an issue in any of my vehicles.

Just saying.......
Same here. DEF should last around 2 years can't believe any of it will sit on a self that long.
__________________
GTM41261 is offline   Reply With Quote
Old 10-06-2022, 08:57 PM   #9
Senior Member
 
Brand: Thor Motor Coach
Model: Tuscany 42GX
State: Missouri
Posts: 943
THOR #9178
DEF is carbon, hydrogen, nitrogen, and oxygen in a 32.5% Nitrogen blend

In a sealed container, what exactly goes bad?

They simply dilute carbamide aka urea and sell you high priced fertilizer
__________________
Never confuse education with intelligence
lwmcguir is offline   Reply With Quote
Old 10-12-2022, 05:16 PM   #10
Member
 
Brand: Thor Motor Coach
Model: Freedom Elite 24FE
State: Washington
Posts: 80
THOR #23201
Quote:
Originally Posted by The Gritz Carlton View Post
Taste it...if it tastes like piss, it's good. If it tastes like water, don't use it.
Iím proud to say I donít know what piss tastes like🤔
I think Iíll skip the taste test and just keep buying from a high volume retailer 😆
__________________
racefan is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 05:31 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2