S
smorrow
After scrubbing all the growth off my bronze prop I then applied some WD-40 and scrubbed it in with a fine graded emery cloth. It did a nice job of pulling out a little more ground in dirt to give it a nice bronze finish. It wasn't perfect but it looked better than it did the prior sping when I did not use the WD-40 as the final step. Try it hopefully you will have the same result.