[Mgs] rubber bumpers

[Monte/Jane Morris]

I remember using some product the list recommended for restoring rubber
bumpers to a black finish; one that did NOT whiten over time like the
silicon containing products. I used it and the bumpers on my 79B have been a
shiny black for many years now.
What was that product? It had "black" in the name if I remember correctly.

My Dodge pickup bumpers have whitened (I used a silicon based product) and
need restored. How do I remove the "white" oxidation before applying the
above recommended product?
Thanks,
Monte 79B