A local contractor bought one of those low hour ex-government D8 machines. IIRC it was about 20 years old at the time, with about 20 hours on the clock. Every seal on that machine leaked badly, pretty much one at a time. They started out repairing leaks, but then gave up. They ended up parting it out and made good money, but it wasn't a usable machine.
I wonder if that trailer is one of the 10' wide models?