Clear over polished grille

[rockyrivermark]

Subject been discussed here before using auto clear coats etc with conflicting results.
I'm looking to clear over my polished grille since it always needs polishing. I tried wax over it but doesn't help much
I researched a bit and found a commercial coat especially made for various metals including aluminum.
Used on exterior building and storefront doors etc.
anybody try it? If not I'm game and will post my results.

https://www.everbritecoatings.com/ca...-only-c-7.html