eheadingExplorerDec 23, 2014DEF shelf lifeI 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...Show More
bluwtr49Explorer IIDec 23, 2014If stored at moderate temps...it should be good for well over a year. After all it's nothing but water and urea (fertilizer)DEF
Related ContentDEF Shelf Life!DEF Shelf LifeDef Fluid LIfeNorthwood factory sealant/Sikaflex useable shelf lifeDEF Additive
