Nothing major. It's needed the mid life stuff (I'm at 750k). Radiator, clutch, belts and idlers/tensioners and an overhead now and then. Two things I know are going to happen eventually are EGR cooler and turbo and I'm ready for them. My tranny was replaced under warranty just before I got it due to a freak accident. Deer strike took out the lines underneath and cooked it, so not worried about the tranny. I've done all of the DPF/DEF stuff myself and learned how it all works.
Congratulations on your diligence. Having a newer trailer is really a plus. I’d like to see a thread on maintenance costs in retrospect. I know mine have been very low overall, mainly due to necessity. I try to stay at 12k yr. Cost of oil tires and brakes shocks batteries and washes alone plus a few repairs.
