Hey Greg, I have used Pledge Revive it with good results. The 57 Chevy in Under Glass I just finished. I coated it with Revive It. Now I didn't paint it black. It was molded in that color. But it does make it look darker and a nice shine. I do have 2 models where is has crazed. But you can just wash it off and re-coat it. One of them was a Rustoleum green and the other Model Masters orange. Now other models I coated using the same paints are fine. So I don't know why it happened. Some people coat the car before doing the silver/chrome trim. If they screw up. It washes right off. I'm no expert by any means. I used it because a forum member told me about it. Others might not recommend it. I'm still learning.