I've had a request from Alan/Tradgardmastare for details on how I weathered these vehicles. It's very straightforward mainly because I want it done quickly with the minimum of fuss.
I use Earth Brown, a piece of paper and trimmed down largish paint brush.
Dip the brush in the Earth Brown; skim most of it off back into the pot; then I work the brush back and forth on the paper to get it almost dry.
Then with light back & forth strokes I work from the front of the vehicle. Ideally the brush should lightly touch raised surfaces. Repeat as needed until you're happy. I try to think logically where muck would accumulate. That includes doors and running boards where chaps get in and out of the vehicle.
I then repeat the process with a pale sand colour paint. This time I only brush over upper surfaces like the front of the cabs and the tilts. I also dry brush the windscreens with the sand to get a filthy window effect.
And that's it.
Trucks Deluxe (apart from the tyres)
More tyre trauma
Propaganda & Radio Trucks