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Old 12-26-2021, 07:42 PM   #41
Daryles
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Two different stamps.
Purchased one day apart, same store...
I'm confused....
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Old 12-27-2021, 08:55 AM   #42
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Originally Posted by Delaine and Lindy View Post
I agree, DEF is a sensitive issue. Better be careful storing DEF, and buying, just any DEF. I know some are going to say I buy what ever is on the shelf. That is your choice. Since DEF systems was installed in the beginning, I have had no issues, I always buy Blue DEF. My choice. You replace the entire systems gets expensive, as said above. I wish I had kept the Trucks that didn't require the DEF system. But, I didn't, again thats my choice. I can say what I want to say, but, China owns us, today. Good Luck.

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Hey ,we agree, only Peak blue DEF for me .
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Old 12-27-2021, 08:57 AM   #43
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I get my DEF at the truck stop when I fill my truck. I let it get as low as I can and then fill it at the pump.
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Old 12-27-2021, 09:09 AM   #44
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Originally Posted by DadsHemi View Post
https://www.montanaowners.com/forums...1&d=1640561404

New style date code, I’m pretty sure the first two numbers are the year -1 and the next 3 numbers are days. Instead of the plant being the first it looks like they moved it to the middle. If this is correct then this jug was manufactured on 11/12/21.
I haven't bought a box yet ,with that code. The old code was usually GA to start , then the year plus 1, so anything with 22 was manufactured in 21. The next three numbers are the days "REMAINING" in the year . The rest of the numbers are the batch code . I got this explanation by calling ,and talking to someone at Peak .

I bought a jug of Peak Blue a couple days ago at Walmart ,not sure if this is the new trend, but there was "NO" date code to be found on the box. It had the Walmart sticker on it , and a date of 12/20/21 . I asked the guy at the auto section there about the sticker , he said that's when they receive it at their warehouse, the sticker goes on it . I had to assume it was not very old from the manufacturer , plus its the newer style box , where the top of the jug is visible , and you see the spout that comes with it. You can actually carry the box by the handle on the jug .

I also asked the guy at the counter about their DEF ,and he said we usually had a hard time keeping it on the shelve ,although they did have several boxes ,with that recent 12/20/21 sticker on it .
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Old 12-27-2021, 09:22 AM   #45
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I prefer to always use OEM parts and liquids unless unavailable, Ford def ISO is 22241 and is compatible with the walmart blue DEF.
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Old 12-27-2021, 09:25 AM   #46
PSFORD99
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Originally Posted by Daryles View Post
Two different stamps.
Purchased one day apart, same store...
I'm confused....
Its a little difficult to read the numbers on your pictures, the top box appears to be newer then the bottom box , I read 22172 on the top box ,and 22203 on the bottom box ,bottom box being the oldest , 203 days remaining in the year , so around 6*1/2 months old .
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Old 12-27-2021, 10:09 AM   #47
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Originally Posted by Daryles View Post
Two different stamps.
Purchased one day apart, same store...
I'm confused....
Yup I messed it up, itís 2/18/2021, I was using that Julian calendar and messed up.
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Old 12-27-2021, 06:55 PM   #48
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I was in our local Walmart looking for some 5W40 for my new wood chipper shreader. I bought the last 2 bottltes. I did notice that they had 12 jugs of shell rotella - but the pickens were slim on all accounts. There was no DEF of any sort on the shelves.
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Old 12-29-2021, 01:37 PM   #49
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Just wondering if you guys have a preference when buying DEF other than at the pumps when filling up at truck stops? I have a 2020 Ram 2500 and I have been using the Autozone brand. They sell the Blue DEF but I was just curious if there is any difference between the two other than price. When I look at the ingredients, they both seem to be the same and meet all Federal requirements. This is my first experience with using DEF. I had a 2011 Ram 2500 that did not require it.
It's a chemical, they are all the same.
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Old 12-29-2021, 02:15 PM   #50
Bob and Jeannette
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I buy blue def because I can read the date code.
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Old 12-29-2021, 03:21 PM   #51
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From what I'm told as long as they're API certified they're all the same.

https://www.api.org/products-and-ser...-exhaust-fluid

According to the following there are no other ingredients and there is no room for them in Blue DEF.

https://asset.productmarketingcloud....b-f8e7ef898b4b

https://asset.productmarketingcloud....2-0448658257d2
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Old 12-29-2021, 03:38 PM   #52
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I buy blue def because I can read the date code.
I think Peak ( aka Sinclair Oil ) is changing their code system. I was in Home Depot this afternoon and they had two full pallets by the contractors desk so I looked for the date code and the only numbers I could find was just an 8 digit number, very small numbers. The first 4 where 2022 what ever that means.
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Old 12-29-2021, 03:53 PM   #53
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Think about it, truck stops are never going to run out if they did it would bring this country to a halt, so you could always go there to buy.
gas stations routinely run out of gas or diesel especially in tough times, ask anyone who was in south texas this past february, or during hurricane season and recall the 1970s anywhere in the USA when people fought over gasoline during the oil embargo. Why would DEF be any different? Supply chains fail, shortages happen.
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Old 12-29-2021, 03:54 PM   #54
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DEF has a roughly one year shelf life, no need to panic buy it. Every box has a MFR date code just have to learn how to read them. Always buy the freshest on the shelf.
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Old 12-29-2021, 06:24 PM   #55
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DEF

Thanks all for the information on the expire date, I'm new to using it also and didn't think or know that I should watch for that issue. Anyone know what the shelf life of this should be?
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Old 12-29-2021, 07:06 PM   #56
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I was in our local Home Depot today and thought i would check out their stock of DEF...they had none! So we went to a secret location described by mhs4771 in post #21 above and they had plenty! Bought a jug of their store brand for $9.99. It pays to read the forum!
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Old 12-29-2021, 09:42 PM   #57
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Originally Posted by JDDilly View Post
I get my DEF at the truck stop when I fill my truck. I let it get as low as I can and then fill it at the pump.
I'm with you JD, never bought a box. I get it at the pump when I need it. With a lot of newer rigs on the road I feel the DEF is fresh enough.
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Old 12-29-2021, 11:16 PM   #58
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Def

Fresh is the key. I buy Walmarts cheep def. They go through very quickly.
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Old 12-30-2021, 08:14 AM   #59
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Thanks all for the information on the expire date, I'm new to using it also and didn't think or know that I should watch for that issue. Anyone know what the shelf life of this should be?
Shelf life is about manufacture date and storage temperature. Blue def can be up to two years in ideal conditions. It appears that cooler is better.
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Old 12-30-2021, 09:12 AM   #60
PSFORD99
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Originally Posted by DadsHemi View Post
I think Peak ( aka Sinclair Oil ) is changing their code system. I was in Home Depot this afternoon and they had two full pallets by the contractors desk so I looked for the date code and the only numbers I could find was just an 8 digit number, very small numbers. The first 4 where 2022 what ever that means.
They have , I finally found it on a box I just bought from Walmart ,it's all but unreadable . I looked for the usual date code ,and it was not there . Was looking at it the other day, haven't used it yet, and noticed some printing, but it's over some other writing ,so I couldn't really tell what the date code was .

Yes the printing is very small, nothing like the old date code , plus the new box ,but I think they have had that for awhile ,where you can grab the handle of the jug to carry .
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