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DEF Urea crystals (snow)

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Old 10-22-2015, 01:05 PM
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DEF Urea crystals (snow)

Searched but did not find any discussion on this. Sorry if I missed a thread. Feel free to point me to it.
Is there a real concern about crystals? Service guy told me do not use DEF from a previous open jug. That urea crystals will ruin system. I can see being cautious about making sure to clean them off filler tube, but seems any residual would simply redisolve. Is my thinking flawed?
Old 11-07-2015, 07:48 AM
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I just read a tsb that the crystals will turn back to a liquid when they are mixed back in. The tsb is listed in this sight.
Old 11-07-2015, 07:54 AM
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Could not find it here so found it on another site here is a link it's clear at the bottom. https://dl.dropboxusercontent.com/co...GRHi/file?dl=1
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