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How long can you store DEF?

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Old 04-19-2016, 03:21 PM
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How long can you store DEF?

I have a farmer that has mucho DEF that he wants to sell me cheap, how long can I store it and still use it?

I have heard 1yr 2yr 4yr ????????

I am buying it all if it can be stored in 50-55 degree temps for 3-4 years.
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Old 04-20-2016, 08:15 PM
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OK I checked with one of the manufacturers' chemist

His rely: If stored at or below 68F it will store forever, above it starts to deteriorate and if it is in over 85-90 degree weather it will be useless in less than a year. Shelf life in a store with 70-75 degree temps is 2 years max. So check stuff off those rural or slow turnover locations and do not use it...

I now have 125 gals, purchased for 90 bucks total out of a sub cellar with temp reading of 62 degrees , in my cellar temp 66 and next to the air handler where it will always be under 68 degrees until used up....
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Old 04-21-2016, 12:40 PM
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Originally Posted by Harvie View Post
OK I checked with one of the manufacturers' chemist

His rely: If stored at or below 68F it will store forever, above it starts to deteriorate and if it is in over 85-90 degree weather it will be useless in less than a year. Shelf life in a store with 70-75 degree temps is 2 years max. So check stuff off those rural or slow turnover locations and do not use it...

I now have 125 gals, purchased for 90 bucks total out of a sub cellar with temp reading of 62 degrees , in my cellar temp 66 and next to the air handler where it will always be under 68 degrees until used up....
Thanks for posting, good info to know!

Sounds like you have enough DEF for a lifetime.......
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