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
According to ISO 22241-3 If stored between 10F and 90F and not subjected to direct sunlight the life expectancy of DEF is a minimum of one year.
