Clay
Before you revert to rubbing compound try Maguire's Three Step process. It
takes a bit of elbow grease but I think you will be pleased with the results.
I used it on the trunk lid of my 1953 Imperial which was really dull and
badly oxidized. I didn't expect any great results and was I surprised. I am
now using it on the rest of the car and it is working beautifully.
Turtle wax also puts out a product called "2001" and it too does a great job
of restoring a nice shine.
Good Luck
Quint