I used a product called "Forever Black" on my mirrors, bumper ends and air
intakes to make them look new. Available from Rocky Mtn Motorworks and
probably others. It goes on with an applicator like shoe dye after cleaning
with a companion product. It didn't work so well on my grill probably because
I used so many silicon based products in the past to try to bring it back.
Maybe if I prepped the grill with scotch brite as you would for paint it may
have worked better.

Ken Hunter
82 'Westy