40k on my '14, live in Maryland (gets nice and cold) and have only ever filled up at Flying J DEF pumps. Runs me about $17 a year - this year was $17.70. Only need to fill it one time per year. Never had a trouble light, never had a freeze problem, never had a hiccup.
Hint: time your fillups so you get DEF in hot weather, otherwise it takes forever to get that stuff to flow in the cold!
Hint: time your fillups so you get DEF in hot weather, otherwise it takes forever to get that stuff to flow in the cold!
