i use Maguires gold class. my truck isn't black, but at one time i had 3 black trucks always used the gold class.

what i do is wash it
clay bar it ( mothers claybar)
then get the gold class wax and put some on the pad and rub it on small sections at a time. then use a 100% cotton towel to wipe it off with. if you have bad swirls then you probably need to do a wet sand on your clear coat. unforatnly i got a huge bundle of towels from Sams club and they were 100% cotton but they left a purpose haze on my paint that really didn't want to come off. i went from this




to this



unfortunately there still are a lot of swirls the clay bar and hand buffing didn't get out so will have to do a wet sand this summer. i have never done it but i am going to learn

Also when washing use a micro fiber mit.