My personal experience mirrors that of Placo1.

I have used FI for years, but I have found the Final Detail leaves the surface glossier and shinier.

But, if someone feels they get better results with FI, then I wouldn't say they're wrong. It may work better with their car.

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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".