I had my Vet Come to the farm to file my horses teeth. Anyway well he was there I always check out my future truck which is a 2001 4X4 pstd. I noticed that his front aluminum rims where kinda on the black side. Looked like oxidation. So I asked him what the heck is that. He said "Break Dust" Say what? he says the front wheels get overed in break dust.
Does anyone want to take a stab at explaining this one?