exterior plastic on mirrors, air dam, bumpers etc. What to use on them? (Page 1/1) maryjane APR 10, 11:35 AM Been awhile since I tried to take care of a truck, as the 08 Silverado I bought new was used to build my farm and it got and stayed pretty dirty...well, very dirty. Got a different truck now that I live in subdivisonland and would like to keep it looking reasonably 'nice'. What is good to use on the external plastic bits and pieces to keep them black instead of fading gray in the sun? F-150xlt if it matters.. litespd APR 20, 02:51 PM Don, I have a friend who is extremely into detailing. He swears by this stuff, so I've bought a bottle of it, but haven't used it yet. Best price I've found so far for the 12 oz. bottle was on Amazon. maryjane APR 21, 08:57 AM Thanks. I will look for it.