I've used Color Guard for years on my pinpoint vinyl
convertible top and it looks great at 21 years. It's a lot
more expensive than Armor-All. First I use Armor-All
Cleaner.
I use Meguiar's plastic cleaner and polish on the plastic
rear window and it too looks much younger than it's age.
--Roger van Hoy, '55DeSoto, '42DeSoto, '66Plymouth,
'73Duster, '81 Imperial, Washougal, WA