Mark, I have gotten very good results using this using on the fiberglass
bumpers and cladding:

https://www.semproducts.com/product/bumper-coatertm/39104

How long it holds up is to be seen though..

I have also used Adhesion promoter on the plastic pieces:

https://www.semproducts.com/product/plastic-adhesion-promoter/promoter

On 8/29/18 5:22 PM, Mark Belanger wrote:
> Greetings all,
>
> I recently got a replacement center piece for the airdam on my '91 GL
> Camper, which I lost on a bad trail. It's pretty faded, so I'm wondering
> whether there is a reliable way to get it and possibly the lower grille
> closer to the original black?
>
> Typically I've seen recommendations of using matte black spray paint, but
> I'm skeptical of paints ability to adhere to plastic when it will take such
> abuse from rocks and other road debris.
>
> Has anyone used Bondo Black or Meguiars Ultimate Black with any success?
> I've also heard of some technique using a hot air gun, but haven't yet
> researched that.
>
>
> Thanks much,
> MB
> --
> ________________________________________________________________________
> Mark Belanger - mbelanger@gmail.com