Hi, I also have a jet black 15 year old Goldwing in the stable,
still looks like it just rolled out of the showroom
Plexus ( spray can ) keeps it immaculate, light spray on light cloth off,
It is specifically made to fill minute scratches in aircraft acrylic windscreens.
Works a treat, you need to have a mirror finish to start with because it has no cutting ability.
Cheers,
Once upon a time I also had a Daimler XJ6 Coupe, Mr Sheen did a great job on that one.
I kid you not.