DEF
On an average how much DEF are people using per trip(or tank fill up) on late model DP.
Forum Discussion
I just put in 8.4 gal to top off my tank. I have driven 2500 miles since I put any in and at that point I was showing 3/4 full about 12 gal and I had 5 gal left in the tank. So maybe 6 gal of usage for 2500 miles (the numbers don't work exactly because this is all estimates), mostly open road miles, it does make a big difference. Stop and go will eat your DEF tank much faster.
