Dirtying things up

After an earlier not-so-successful attempt to make the Abrams look sandy/dirty, I hesitantly starting applying a "Dark mud" wash (from AK Interactive) to the Puma's wheels.

Not entirely satisfied, I thinned it 50/50 with White spirit and tried again on a few side panels. The effect was really to my liking, so I coated the entire model with it. The wheels have received 3 coats in the meantime and I dare say it all looks really good. It's no longer a factory-fresh Puma.