Mine has 78,000 miles, 125,000kms. Most fluids now running Amsoil except transmission. Haven’t changed transmission fluid. Only problem to date has been air suspension. It does not like winter weather and will fail, blowing the fuse. Suspect pump forms condensation, then freezes up. No solution...
25000km on my 2016, about 1/2 of it towing aprox 6500 lbs trailer. So far nothing except two engine light codes, one forr suspension overweight, other factory undetermined. Neither reoccured after resetting. Other than a dislike for the nav sustem i really like the trick. Steady 15 mpg towing...