[4-series]

i have had my car for a few months now. jet black. no swirls. i guess the dealer did a good job. but i want to protect it. should i start with the clay bar or just direct apply sealant and then wax it? I do not see why i should use the clay bar to scrubb off the dealer prep..

(i think i read the wax was the optional part since the sealant is good enough and lasts longer)

Edit: one more thing. I bought the Zymol Natural Liquid Cleaner and Meguiars Quik Wax and was wondering if i can use these in any of the steps above or should i discard them. thanks