The hood paint on my 36-year old El Camino has faded badly and probably needs to be repainted to match the appearance level of the rest of the car. I would like to make one last attempt to bring back the paint from the dead like you see on those TV commercials for making junk yard cars like new. I have tried claying and compounding which have made about a 10% improvement in the finish, but things still have a long way to go to match the rest of the car. One thing I have noticed is that when the hood is wet, the color becomes deep, brilliant, and shiny. Same thing when Dawn soap is rubbed over the hood and allowed to sit. It seems like the paint is starved for oil or moisture or something. What I'm wondering is if there is some substance or product similar to tongue oil treatment for old wood that would put back the missing ingredient and add better color to the paint. Appreciate any suggestions you may have.