AngelWax Enigma Corona. This stuff isn't cheap but it cleaned up, dressed and Sio2 coated all the blacks. Applied with a MF applicator and then buffed with a MF cloth. Doing the honeycomb grille was a bit of a pain but, luckily, the holes were big enough for a good portion of the applicator to fit through, so I managed to get it done without it taking too much time and the product left everything looking a shade deeper black than previously, as well as leaving them with a matte, factory-like finish. Looks nice!