149,850 miles and had my first issue with the EGR. Dealer replace and back on the road and looking for 200,000 miles on my 2016 ED 2WD with 3:55. I average 27 mpg and still love my truck. GreenDiesel definitely makes it run like it should, I'd forgotten how slow it is off the line without. I haven't needed to have the truck worked on since I installed the GreenDiesel tune since 2017.