Thanks. The reading I have done about this aligns with what you said about crystalization. Yeah...the DEF gauge takes forever to move. I've put about 13k on the truck since I bought it, and have filled the DEF tank twice. Both times, it took about 5 or 10 minutes to register the changed level in...
I have a 2017 1500 ED. I topped off my DEF tank about 2 weeks ago at a local truck stop. It was just a bit below half. All was well until about 3 days ago when I got the "service DEF system. See dealer" message. Today, I just got the one saying it wouldn't restart in 200 miles.
This happened...