Just a heads up. In my quest for the holy grail of waxes and polishes I came across Collinite Double Coat. I did the preliminary tests on the table top and my slide test. It looked very promising so I tried it on a set of Cheetahs. I quickly noticed faint black on the polish rod. NO where on the bottle did it say it was incompatible with plastic. I checked their web site and there it says not to be used on plastic. Just a heads up. The quest continues.