Wild,

That is a good description, it is kind of like Amor-all in some ways and yes with black it just doesn't work well on the paint. The funny thing was when I got the car it came with this can of Plexus in the front boot and I had no idea what it was for until I called the dealer. From what they told me it works as a sealant that it very important for preservation of the bra material.

Russ