Gold class is a blend of carnuba and polymers.

For a black car, I'd use Gold Class or Meguiar's NXT. I was at a detailer's clinic at Meguiar's head office in Irvine, CA, and we did some testing on black paint comparing NXT with gold class and other waxes. Gold Class and NXT made the paint darker and glossier than any other product we tested.

I think I'd lean towards the NXT. It is a synthetic polymer, which provides significantly better and longer lasting protection than any carnuba product, at least according to Meguiar's chief chemist, Dr. Pennington.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".