The g8 grill is homeycombed like that.
I spot tested various trim and tire dressings the other day after cleaning with a degreaser, ipa, and a small bottle brush. The test products included Dg 271, wets, stoner foaming tire cleaner, meguiar's ubpr, some old back2black, and a couple others. I put a thick application of each and let them set a couple hours. I can't speak for longevity but the Duragloss 271 darkened the best followed by the stoner, then wets even though it left a dry area. The other results weren't worth mentioning.
I recleaned with some mckee's trr and the smallest wheel woolie and it looks quite a bit better just from that. Now I need to retreat. I'm debating using the mckees tire coating (used it on the engine plastics, cai, and polymer intake manifold with great results. Although they aren't faded they look new, clean, and dust isn't attacting), the DG 271, or I found a thread elsewhere where I saw an optimum rep suggested using opt-lense on trim....and since I have some and need to coat the headlights.....
May try test spots again and see.
I'm curious how well the mckee's rv uv50 would work.