While I don’t keep track of the def usage I used just over 2.5 gallons of def total, the majority of it was while towing and the gauge barely moved on the return trip.I get very similar fuel mileage, what is more impressive is if you convert 8.4L/100km to Canadian mpg it is 33.6 mpg.
Did you do the hand calculations for your results, I found that the EVIC shows 1 mpg better than it is, most of the time, but still very impressive either way!
Do you keep track of your DEF usage? I got over 700km/L on the last fill.
I will be doing a 1000km trip with my 8x16 loaded trailer soon, moving my daughter to Quebec, “je me souviens” is the logo on their plates in that province. I will post my mpg.
You must have many KMs on your truck now.
I have put a total of 40600km on my truck in 14 months now, most is highway driving. Maybe 1/3 is while towing.