Walmart Blue DEF
Cargo Master
Joined: Feb 2005
Posts: 2,898
Likes: 185
I have been running Walmart Supertech DEF for four or five years and haven't had any trouble. Maybe the guy that had trouble got some from a bad run. This tells you to keep your receipts and don't buy it to far in advance.
Just glad my John Deere equipment doesn't use DEF- I bought it all before the larger equipment started requiring it.
Just glad my John Deere equipment doesn't use DEF- I bought it all before the larger equipment started requiring it.
More Turbo
Joined: Dec 2018
Posts: 535
Likes: 23
From: Arkansas
I'm assuming johndeerefarmer has equipment quite a bit larger than a lawn and garden "tractor" if you wanna call em that.
Posting Guru
Joined: Nov 2010
Posts: 1,430
Likes: 6
From: Alabama
Cargo Master
Joined: Feb 2005
Posts: 2,898
Likes: 185
Yep, I caught it.;
I have a 105 hp tractor built in the Mannheim factory, a 85 hp track loader and 70 hp skid steer. The tractor is a '13 model so missed having to have DEF but it does regen on occasion. The 85 hp compact track loader is the same. . The 70 hp skid steer is just a year old but no DEF either. The 25-75hp engines have less stringent emissions standards to meet (though still Tier 4) so they can get away without using DEF
I have a 105 hp tractor built in the Mannheim factory, a 85 hp track loader and 70 hp skid steer. The tractor is a '13 model so missed having to have DEF but it does regen on occasion. The 85 hp compact track loader is the same. . The 70 hp skid steer is just a year old but no DEF either. The 25-75hp engines have less stringent emissions standards to meet (though still Tier 4) so they can get away without using DEF
Cargo Master
Joined: Feb 2005
Posts: 2,898
Likes: 185
Posting Guru
Joined: Nov 2010
Posts: 1,430
Likes: 6
From: Alabama
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Mountain Pass
Joined: Aug 2014
Posts: 248
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It is not so much a contamination issue as just DEF has a very short shelf life! They date code the boxes and jugs so to make sure it’s not over 60 days old I highly recommend checking before buying which ever brand you choose! One guy decided to go with Blue Def over Walmart store brand and didn’t know about shelf life and had DEF system problems shortly after fill up due to old DEF that had been sitting on the shelf too long!!
More Turbo
Joined: Dec 2018
Posts: 535
Likes: 23
From: Arkansas
It is not so much a contamination issue as just DEF has a very short shelf life! They date code the boxes and jugs so to make sure it’s not over 60 days old I highly recommend checking before buying which ever brand you choose! One guy decided to go with Blue Def over Walmart store brand and didn’t know about shelf life and had DEF system problems shortly after fill up due to old DEF that had been sitting on the shelf too long!!
FTE Legend
Joined: Mar 2017
Posts: 31,880
Likes: 9,175
From: Western NY
It is not so much a contamination issue as just DEF has a very short shelf life! They date code the boxes and jugs so to make sure it’s not over 60 days old I highly recommend checking before buying which ever brand you choose! One guy decided to go with Blue Def over Walmart store brand and didn’t know about shelf life and had DEF system problems shortly after fill up due to old DEF that had been sitting on the shelf too long!!
FTE Legend
Joined: Mar 2017
Posts: 31,880
Likes: 9,175
From: Western NY
It is not so much a contamination issue as just DEF has a very short shelf life! They date code the boxes and jugs so to make sure it’s not over 60 days old I highly recommend checking before buying which ever brand you choose! One guy decided to go with Blue Def over Walmart store brand and didn’t know about shelf life and had DEF system problems shortly after fill up due to old DEF that had been sitting on the shelf too long!!
Q. What is the shelf life of DEF?
A. The shelf life of DEF is a function of ambient storage temperature. DEF will degrade over time depending on temperature and exposure to sun light. Expectations for shelf life as defined by ISO Spec 22241-3 are the minimum expectations for shelf life when stored at constant temperatures. If stored between 10 and 90 deg F, shelf life will easily be one year. If the maximum temperature does not exceed approximately 75 deg F for an extended period of time, the shelf life will be two years.
Q. How can I determine when the DEF I have purchased was manufactured?
A. All DEF packages will have a date code located somewhere on the product. The date code will allow you determine the date the DEF was made. 1 gallon containers will have a laser code imprinted on the bottle. 2.5 and 5 gallon containers have a small date code label applied to the bottle. Drum and totes will have a label applied to either the top or side of the product. The first digit of the date code represents the DEF batch number and the next 6 digits reflect the date that the batch was filled. Date Code Imprint Date Code Label
Q. What impact will exposure to high temperatures for an extended period of time have on DEF?
A. While DEF exposure to constant, high storage temperature may have some impact on shelf life, this should not concern operators. Extensive testing in very hot climates has been conducted confirming that DEF stored at a constant temperature of 95 deg F had a shelf life of over 6 months.
http://www.sboil.com/cms/wp-content/...Sheet-0112.pdf
I've kept DEF in my house if there is some left over. Maybe I've got lucky because I never checked the date codes before. Thanks for the heads up.
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
It is not so much a contamination issue as just DEF has a very short shelf life! They date code the boxes and jugs so to make sure it’s not over 60 days old I highly recommend checking before buying which ever brand you choose! One guy decided to go with Blue Def over Walmart store brand and didn’t know about shelf life and had DEF system problems shortly after fill up due to old DEF that had been sitting on the shelf too long!!
I'm going to start checking now but found this online. From https://cumminsfiltration.com/sites/...es/MB10033.pdf
Q. What is the shelf life of DEF?
A. The shelf life of DEF is a function of ambient storage temperature. DEF will degrade over time depending on temperature and exposure to sun light. Expectations for shelf life as defined by ISO Spec 22241-3 are the minimum expectations for shelf life when stored at constant temperatures. If stored between 10 and 90 deg F, shelf life will easily be one year. If the maximum temperature does not exceed approximately 75 deg F for an extended period of time, the shelf life will be two years.
Q. How can I determine when the DEF I have purchased was manufactured?
A. All DEF packages will have a date code located somewhere on the product. The date code will allow you determine the date the DEF was made. 1 gallon containers will have a laser code imprinted on the bottle. 2.5 and 5 gallon containers have a small date code label applied to the bottle. Drum and totes will have a label applied to either the top or side of the product. The first digit of the date code represents the DEF batch number and the next 6 digits reflect the date that the batch was filled. Date Code Imprint Date Code Label
Q. What impact will exposure to high temperatures for an extended period of time have on DEF?
A. While DEF exposure to constant, high storage temperature may have some impact on shelf life, this should not concern operators. Extensive testing in very hot climates has been conducted confirming that DEF stored at a constant temperature of 95 deg F had a shelf life of over 6 months.
http://www.sboil.com/cms/wp-content/...Sheet-0112.pdf
I've kept DEF in my house if there is some left over. Maybe I've got lucky because I never checked the date codes before. Thanks for the heads up.
Q. What is the shelf life of DEF?
A. The shelf life of DEF is a function of ambient storage temperature. DEF will degrade over time depending on temperature and exposure to sun light. Expectations for shelf life as defined by ISO Spec 22241-3 are the minimum expectations for shelf life when stored at constant temperatures. If stored between 10 and 90 deg F, shelf life will easily be one year. If the maximum temperature does not exceed approximately 75 deg F for an extended period of time, the shelf life will be two years.
Q. How can I determine when the DEF I have purchased was manufactured?
A. All DEF packages will have a date code located somewhere on the product. The date code will allow you determine the date the DEF was made. 1 gallon containers will have a laser code imprinted on the bottle. 2.5 and 5 gallon containers have a small date code label applied to the bottle. Drum and totes will have a label applied to either the top or side of the product. The first digit of the date code represents the DEF batch number and the next 6 digits reflect the date that the batch was filled. Date Code Imprint Date Code Label
Q. What impact will exposure to high temperatures for an extended period of time have on DEF?
A. While DEF exposure to constant, high storage temperature may have some impact on shelf life, this should not concern operators. Extensive testing in very hot climates has been conducted confirming that DEF stored at a constant temperature of 95 deg F had a shelf life of over 6 months.
http://www.sboil.com/cms/wp-content/...Sheet-0112.pdf
I've kept DEF in my house if there is some left over. Maybe I've got lucky because I never checked the date codes before. Thanks for the heads up.
Super Moderator
Joined: Aug 2008
Posts: 37,379
Likes: 1,863
From: Frederick, MD
I don't worry about it. I usually have a little left over and store in the laundry room till needed. When I need def I go to wally world or autozone and pic some up.
As long as the container has not been tampered with, I buy it and pour it in.
As long as the container has not been tampered with, I buy it and pour it in.
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