Topped off the DEF today..I have a filling station about 8 miles down the road where I can pump it @ $2.89 a gallon. I purchased a 2.5 gallon jug of Blu Def for 11.47 @ Walmart a few weeks ago to have, "just in case"....BUT...it's MUCH cheaper to pump it at a station.
I was curious to see what the experience would be like and how much it would take. When I took possession of the truck, gage showed full, though I have no clue how "full" it was.
Anyway, I have 1114 miles on the tank...EVIC shows I've used 60 gallons of fuel...no towing, and more city driving than I care to drive in this truck, one trip to and from WV, mostly interstate and the rest driving to and from work.
I pumped in $7 of the DEF @ 2.89 per gallon for a fill of 2.422 gal....SOOOOO, you figure I've used 60 gallons of fuel (That's what the EVIC showed) and in the same time may have used 2.42 gallons of DEF that is about 25:1 as opposed to the claim of Chrysler possibly being 50:1.. or simply put, 50 gal. of DEF for 1 gallon of DEF......
Again, don't know how "full" DEF tank was, but I know how much I put in it and when pumped "clicked off", I stopped....so now I know..