I have been cleaning my DA's moldings with armor-all. It gives it a shine for about a few days then wears off to ugly dullness. I was told that armor-all my also crack the plastic. Is this true? what are you ways of cleaning and making your molding shine for a longer period of time. How is it as far as painting go? Thanks

 

I used black to black by..Mother? Very good result, used it on my window molding and it have not yet faded.