I was tightening bolts under my 3.0 tonight after quite a few more miles off pavement and saw these crystals on the DEF injector. Nothing seems loose so it’s either a bad seal or a cracked housing if I had to guess. I do wonder if this is more common and a potential source of accelerated DEF use noted all over this sub-forum. It’s certainly not a fast leak that’s ending up on the ground, but I’m expecting the dealer to give me the same old “gonna be a while” line for replacement parts. Something tells me the freeze/thaw cycles of AK’s shoulder season are not going to slow this down. The Canadians can’t finish their tunes fast enough.