Walaby wrote:
I purchased a Ram 2500 diesel in Jan.   It's a daily driver, plus TT hauler.  So, far, I've driven it daily for two months, and 4 (or maybe 5) tanks of gas, and still have just over a half tank of DEF.  I don't forsee the need to store def.  I'll buy a 2.5 gal, and fill it up before my trip to Florida.  
Mike
Mike - If you'll be pulling your rig when you head to Fla, plan on using more DEF than when you're driving around town.  I know when I'm towing, I use quite a bit more than when I'm not.  But it's really not a big issue because you can buy DEF most anywhere now.  
Jim