DEF shelf life
I have read that DEF has a definite shelf life, and I've heard figures of around 6 months. Given that most of us don't use our motorhomes in the winter, or at least like in my case, only on relatively...
Forum Discussion
Old-Biscuit wrote:
Biggest issue with non use is crystallization which clogs up system.
I can not think of any reason DEF would crystallize in a sealed tank. Granted if there is an external leak someplace or if the DEF in a line is exposed to air than the water could evaporate and leave Urea deposits which is a powder. But even then it should go back into solution with the addition of water. I would think that regular use should prevent that completely no matter what the age of the DEF.
