I had a black 350Z for 4.5 years, and I was the first owner. I had no complaints about the paint until I moved to Vegas for 2 years from San Diego. Needless to say, the front bumper and lower hood suffered from massive rock/sand chips. The rest of the car was in great condition. I always kept a coat of wax on the car. The way I did it was, get a professional wax job every 2-3 months, and I ran it through a touchless car wash with their so called "wax polish" (which usually cost the most) every 1-2 weeks. My car always looked clean and shiny.
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