RE: a 1984 300D... My firend's car has been sitting for 1 year without moving. He's finally getting it back on the road. Over the past few years the wheel lug bolts have all rusted on the surface and there's even some rust on the threads themselves. That also means there's some rust on the threads in the wheel hub. We bought 20 new lug bolts, so half of that problem is solved. The question is how do you "clean" the rust or junk out of the female threads on the wheel hub? Would a long, coarse, fat bristled brush on the end of a drill work? I don't think I need to chase them--or maybe I do?? None of these bolts were ever cross-threaded. Any ideas?