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What are your opinions on the best additive for preventing gel-up in the winter?
 

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i love the diesel kleen
 

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I have used stanadyne in alaska for 5 winters with no gell-ups. PowerService (thats diesel kleen ryt...been so long since i looked at a bottle) was my second choice when i couldnt get stanadyne. I have also used one of the additives from napa...i cant remember the name, but it was in a clear bottle and said recommended 4 cummins on it.
 

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I use powerservice in my truck, and we use it in the kenworth's at work. havent had problems yet.
 

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I use a heated garage:tease:D

And a little power service....goes in all the tractors as well with no problems!
 

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There is also this product that you can use if you find yourself with a frozen fuel filter or fuel. Pour this in and it will melt the wax crystals that formed causing the gel. The other product mentioned by chevy*tough is great as preventative maintenance; however, if you are already gelled up this is the product to use.

https://www.amsoil.com/storefront/drc.aspx
 

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X2 on Diesel Kleen.
 
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