Need help with plastic trim around bottom of car

[EBarker1928]

https://docs.google.com/open?id=0B2JgoqF3fBwOTFZJWkw3VVRabVU

This is what it looks like^

I have no idea how to get rid of it. I rubbed a clay bar on it and it took up the dark black marks, but there is a LOT of grey stuff that I can't get rid of. It feels smooth to the touch but it looks terrible. Please help

[juliom2]

Re: Need help with plastic trim around bottom of car

Looks pretty bad . If its already smooth to the touch and the spots remain you could try to sand them down and polish with Ultimate compound; but since many of these pieces have a thin layer of paint you will burn trough easily. If is a removable trim piece ( which I believe it is ) you should look forward to refinish it.
The way to be satisfied in this case.
:

[Michael Stoops]

Re: Need help with plastic trim around bottom of car

Wow, we would never guess that what we're looking at would feel smooth to the touch - it even looks rough! Before going full bore with sand paper, let's step back a bit and try a much less invasive approach. Since clay will only remove surface contaminants and you've already used clay, and you say this feels smooth, we'd suggest starting with a paint cleaner like ScratchX 2.0 or even Ultimate Compound. Make sure to remove any light dust or other loose contaminants by either washing or using a quick detailer on the area first, then apply some paint cleaner to a foam wax applicator pad and work it against the effected area in a small spot - no more than one square foot - using a bit of elbow grease. Wipe the product off before it dries, but understand that you may need multiple applications to remove everything.

Give that a shot first and let us know how it goes.

[EBarker1928]

Re: Need help with plastic trim around bottom of car

Will do! I will definitely give it a try. Thank you