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...
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You can reuse the containers. Like i said about aging def, it will depend on how picky the emmissions system is. Mercedes told me that i could run distilled water in a pinch and get no limp mode, just a check engine light. My GMC would probably go into limp mode on straight water.
