Good thread, I was just heading out to buy some of that 303 from my trim shop on their recommendation of how it will rejuvenate old dried out vinyl. We'll see how good it really is.
No just use wax and grease remover as normal before sanding any painted surface. much less buildup than car wax. WARNING pledge will not last for 50 car washes as other products claim.3 to 4 weeks if you wash your car. my cars have never been washed. I just clean them off with pledge once in a while as needed .the finish is wet and deep