TowForce Posted June 21, 2022 Share Posted June 21, 2022 Thought some of you may find this of interest: Ask Dave: All about DEF shelf life and how long it lasts in the tank I am not going to copy the article to this topic instead here is the link: https://www.rvtravel.com/ask-dave-def-shelf-life-and-how-long-it-lasts-in-the-tank-rvdt-1887/ Quote Link to comment Share on other sites More sharing options...
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