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Tractor Supply (Traveller) DEF

phatboy64

phatboy64

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What s the deal with this DEF, at $9.99 I am thinking about using it. Any feedback on it? I am going to spend most of the summer pulling a trailer up and down the east coast so trying to save some money where possible but not at the expense of going into limp mode due to funky DEF…
 
You will have no problems with it as long as it has not been on the shelf too long.
 
phatboy64 said:
What s the deal with this DEF, at $9.99 I am thinking about using it. Any feedback on it? I am going to spend most of the summer pulling a trailer up and down the east coast so trying to save some money where possible but not at the expense of going into limp mode due to funky DEF…
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Personally when pulling my trailer I fuel and get def at the pump at Truck stops . Cheaper and they go thru a lot of it so age of DEF is not an issue . Price of DEF varies jut make sure it is not old . You can buy a Def tester they show the concentrate level , on line
 
I switched to the Traveller DEF about 1k miles ago, no issues. Picked it up from our local Tractor Supply. Prior to this I ran the Super tech brand from Walmart with no issues. The lines and crowds at Tractor Supply are much preferred, price is the same between the two.
 
I have some DEF that is three years old. It is clear and the refractometer shows the proper concentration but have avoided using it. So are we saying that as long as it meets that criteria, it is good to use?
 
I used $6.99 a box DEF from Rural King for years with no issues and use the same product in farm tractors.
 
I think the Walmart DEF is a bit cheaper, and always clearly labels the date it was packaged. The last batch I bought was three weeks old. Never had a problem with it.
 
I always use the cheapest DEF when i had the system installed never an issue as far as cheap DEF concentration or contamination
 
I recently used it, I use the practice of getting more when I’m at 1/4 tank and put one box to bring me roughly 3/4 tank. I got to just about 1/2 tank and got the dreaded DEF p202e light. I cleared it and have driven 300 miles without it returning so not sure what caused it. The box wasn’t old cause the guy was saying how their DEF flies off the shelf at 9.99. Hopefully there’s no issue
 
I've always used tractor supply and walmart def no issues.
 
Thanks for the feed back. I went ahead and picked up a jug, I didn’t realize it at first but it was the “premium“ version, it was $4.00 more. Next time I will try the $9.99 one.
 
CdnHO said:
I have some DEF that is three years old. It is clear and the refractometer shows the proper concentration but have avoided using it. So are we saying that as long as it meets that criteria, it is good to use?
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Yes.
Chemist here. DEF is nothing but a 32.5% urea solution in water. Urea is a pretty stable chemical itself, so I wouldn't expect any degradation even after 3+ years. Especially if verified by refractometer.
 
I have been using the Walmart brand Def (super tech $8.88 ) for the past 6 years in my Duramax and my Cummins without issue. I prefer jug Def over bulk at truck stops, most I’ve seen have Crystal buildup that I don’t want contaminating my tank.
 
UpNover said:
most I’ve seen have Crystal buildup that I don’t want contaminating my tank.
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The 32.5% solution is pretty close to the solubility of urea in water. That can exceed solubility in low temperatures. So if your DEF stored in a 35 degree shed has crystals at the bottom, that's just precipitated urea.
That won't contaminate the tank if the tank is heated, which I think they are (I don't drive a Diesel). It'll then just go back into solution.
Or store it in the house for a day to let it warm up, crystals should dissolve.
 
DrTron said:
The 32.5% solution is pretty close to the solubility of urea in water. That can exceed solubility in low temperatures. So if your DEF stored in a 35 degree shed has crystals at the bottom, that's just precipitated urea.
That won't contaminate the tank if the tank is heated, which I think they are (I don't drive a Diesel). It'll then just go back into solution.
Or store it in the house for a day to let it warm up, crystals should dissolve.
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I’m talking about bulk at service station pumps. It very well may turn back into a liquid, I just choose not to chance it.
 
UpNover said:
I have been using the Walmart brand Def (super tech $8.88 ) for the past 6 years in my Duramax and my Cummins without issue. I prefer jug Def over bulk at truck stops, most I’ve seen have Crystal buildup that I don’t want contaminating my tank.
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The crystals dissolve once water touches it so if it were to go in the tank it would not hurt anything
 
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