Don't laugh but peanut butter does the job
Turtle Wax Premium Grade Trim Restorer, I use it on my grey plastic and it comes up beautifully and seems to last a long time.
It's now called AutoGlym Bumper and Trim Gel, and is available from Repco stores.
Quote from: StinkyPete on June 16, 2015, 02:47:46 PMIt's now called AutoGlym Bumper and Trim Gel, and is available from Repco stores.How much is it? I use Armourall which keeps the black plastic looking good ($10). I also see Supercheap Auto have Meguiars wipes claiming to do the same (also $10).