Thank you for the comment.
It was a vison, so to speak, of a future diorama with the theme being that of the truck living out its last days in a salvage yard. Just being used on the daily with no considerations for maintenance or upkeep other than pouring gas in the tank and oil in the engine.
I bashed the spare parts in the bed from a partially completed and damaged Ebay kit that I got for next to nothing. The future diorama will need at least one more kit to bash. But as it is a rare kit, I am looking for another built or partially built kit.
For me, there was little difference in weathering the Kubelwagen than weathering the truck. It really comes down to, as you noted, what the builder wants to portray - normal day to day use or complete lack of care other than it starts and moves. This concept works well for most vehicles. Special consideration, though, has to be applied to weathering aircraft; even those abandoned on some side field, as aircraft have an iherent dignity that wheeled vehicles dont have.
And of course, inspiration is only a click away, either looking at other builds or pics of the real thing in the setting you desire to represent.
As for the original, I didnt do a before and after of mine - still learning to photo document this hobby - but I did attach a link to another forum showing a documented build of what mine looked like before the weathering.
Link
https://www.modelcarsmag.com/forums/topic/141380-1926-mack-ac-dump-truck/