My favorite is with scotchbrite. I clean the panel and spray some light oil on it and then give it a good brushing with scotchbrite - like with the sander you have to make full passes across the panel and i pick the direction so that it accents the beadrolling etc.
I then clean with carb cleaner and rag, reoil and light burnish. Thta panel will have a soft glow that you can maintain for years, just a touch of oil and scotchbrite makes it look nice and fresh.