My recipe for black (dark) cars (short version):

Wash, clay, wash, polish (if necessary), 3M imperial handglaze, Collinite Wax (paste, no cleaners). Like a big friggen black mirror.


Polishing depends on how bad the surface is and your skill level. If really really bad, Synthetic Cutting Cream (by Production) to cure medium to bad defects, to Phase II (Production) restore shine to 3M hand glaze to fill swirls and get that mile deep glossy look to wax