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...
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After driving our F350 that got over 5,000 miles on a tank of DEF, I was shocked how much our Cummins 8.9 used, but of course the Cummins has a lot larger DEF than the F350 had.
3,200 miles we added 10 gallons.
3,200 miles we added 10 gallons.
