Jim,

I have used 2 products with great results on a black dash.

My favorite is Vinylex by Lexol. It gives a nice "new car" shine and is suppose to be made out of a "sunscreen" type product.

I have also had good luck with Meguiars Vinyl cleaner in both the "Mercedes Benz black bottles" and also the Walmart red bottles.

If I had to throw in a third one....I would say Dash Wax was ok.

I hope this helps!
Mike

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1986 300E 138k
MBCA Concours Judge
Board Member -
Western Reserve Section