2004 EB with 165k
Bought used from a visiting nurse that was clocking 30 k miles per year. Wow.. Think how much gas that was.....
Issues: leaking right front tail housing seal, hopefully fixed now, leaking rear dif pinion, just squirting more oil in for now. BIG issue: air suspension. Solived in radical fashion: replaced all suspension with coils.
Also replaced the whole steering and suspension while had things apart, but honestly, the upper arms , tie rod ends, lower balls etc seemed amazingly tight for 164k.
Replaced the CV joints too, while I had it all apart.
Waiting for the hammer to fall: running on original spark plugs! Not throwing any codes, pulls good, so I am leaving it alone.