Compression Ignition Addict
Join Date: Apr 2010
Location: Las Vegas Baby!!
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Yes, the DEF is heated. Your truck will not attempt to use any until it is thawed and ready. The DEF is stored in a bladder, rather than a solid tank, to prevent freeze damage.
Also, I believe this bladder is located above or just along side the fuel tank in a boxed thingy that is somewhat flexible. I tried to trace the fill line once and that is where I thought it went but did not want to lay down and get dirty that day.
Don't worry about the DEF in cold weather, it takes care of itself.
2012 F450 Ultimate Lariat pkg, 4X4, FX4, 5th wheel prep, camper pkg, 40console40 seat, Ingot Silver and Black guts
Reese Elite 18k 5th wheel
DuraFlap flaps all 4 corners
60 gal aux tank in bed
7.4 mpg as shown @ 70mph and 25740 lbs gross!!
2012 Fuzion FZ310 Monster Edition Toy Hauler 12,500 dry 16,500 loaded to play. 3100/3500 pin weight
Breast feeding is a hard habit to quit