DEF Usage 2014 Tiffin Red with Cummins Diesel
Just got info for an RV tour to the Maritime Provinces in Canada. They advise that DEF at the pump is not readily available in some areas. I always just fill when I get down to a half a tank so am no...
Forum Discussion
I have a 8.9L and I keep records. I use about one gallon for 280 miles.
I suspect yours would use less. How large is your DEF tank?
I suspect yours would use less. How large is your DEF tank?
