Does everyone else have on of these on the bottom of their DEF tank

[Texas Clodhopper]

I remember someone posted that a Freightliner Gaffney tech recommended keeping the DEF tank full while in storage due to how the DEF crystalizes. If stored below 77 ℉, it has an 18-month shelf life, and below 86 ℉ it has a 12-month shelf life.

 

[Rich W.]

That looks exacly like mine. Rich is probably right. The 2016 redesign is when it started. Rich's looks to be the black HDPE tank and ours is the white translucent tank. I wish ours was the black. It always seemed to e more durable

That’s ok, I’m a bit jelly about the drain.