Hey, saw your post about the matte black painted plastic. Didn't want to post in the forum because I did not want to talk about other companies in there (some people get crabby over it)--anyways, you may want to look into specific companies who make product for Matte paint, such as Dr Beasleys. I Have matte wheels, and bought "matte wheel seal" from them. They have an entire line for matte paint. Bit pricey, but unfortunately, anything for matte seems to be.
http://www.drbeasleys.com/
If you use this one, use coupon code "freeship" or "shipfree" (cant remember which way, its worked for me multiple times)
Chemical guys also sells one, someone did mention it in the forum, they dont sell it on autogeek, here is chemical guys link
http://www.chemicalguys.com/JetSeal_Matte_Sealant_and_Paint_Protectant_p/wac_203_16.htm
http://www.drbeasleys.com/
If you use this one, use coupon code "freeship" or "shipfree" (cant remember which way, its worked for me multiple times)
Chemical guys also sells one, someone did mention it in the forum, they dont sell it on autogeek, here is chemical guys link
http://www.chemicalguys.com/JetSeal_Matte_Sealant_and_Paint_Protectant_p/wac_203_16.htm