doesn't say what the usage was, sounds like a over the road vehicle. if thats the case, highway miles are the easiest one. just kinda idling along low load.
Impressive mileage. Did this guy say he bought a replacement engine with 2,000 miles on it for $360 bucks?? If so, heck, I would have removed the old engine even if it were running fine, and replaced it with the 2,000 mile engine...you can’t even get an oil change and tuneup on a six cylinder for $360 bucks nowadays.