What should I be using to polish/wax my car. I wash it every week with Gold Class but as yet havent used any polish or wax on it. Ive got Zymol wax (Blue stuff) and also some Auto Glym Polish (New stuff for dark cars). Which order should I be doing them in? Should i only be using the Zymol every other week or month and using the Auto Glym alternatating. Cheers