Generally
A super good color to paint directly on surface rust with. You can use it e.g. on battery boxes, frames, undercarriage. On the inside of the floor under the carpet it is perfect, remove all loose fluff and insulation then you paint straight on what is left. However, you must not use miracle paint on smooth surfaces, it must be a rough surface, preferably a little surface rust, grave rust so that the miracle color will penetrate and form a hard and durable surface. However, there must not be oil or grease on the surfaces to be painted, nor can you paint it in other colors. And one more thing, it can't stand sunlight then it just becomes a black powder after a while. It withstands all kinds of oils, degreasing, brake fluid, etc. etc. The only way to remove it after it has hardened is with blasting. Yes, it is a special color that has many areas of use, that's probably why they named it Miracle Paint.