Comment by AlotOfReading

This vehicle was part of a manufacturer-owned highway fleet. That means it received proactive maintenance by trained personnel on a regular schedule, with full access to engineers for diagnosis and OEM replacement parts, and ran on good roads in the mild California climate. It's practically pampered compared to oilfield haulers, especially the ones that live long enough to be auctioned off. They're not comparable.

As an aside, some of the vehicles I've worked on serve in oilfields and I'd be horrified to discover 1% of them were catching fire annually.