Hi all,
Contributed my experience using the urethane+mineral spirits sealant to another forum, so I thought I would share here, too. My brother in law's 2001 Nissan Frontier is in pretty rough shape- we just compounded and polished the dullness away and are finishing the black plastic panels with Forever Black.
He tried to treat the headlights about a year ago with the 3M headlight kit and didn't get much improvement. I used Meg's unigrit to wetsand the headlights- 800, 1500, 2000, 2500, 3000 and then applied the urethane mixture (no compounding in the hopes that the urethane will adhere better to the slightly scuffed surface). I like the results and expect the finish to hold up well.
Untreated left light:

Treated right light:
Contributed my experience using the urethane+mineral spirits sealant to another forum, so I thought I would share here, too. My brother in law's 2001 Nissan Frontier is in pretty rough shape- we just compounded and polished the dullness away and are finishing the black plastic panels with Forever Black.
He tried to treat the headlights about a year ago with the 3M headlight kit and didn't get much improvement. I used Meg's unigrit to wetsand the headlights- 800, 1500, 2000, 2500, 3000 and then applied the urethane mixture (no compounding in the hopes that the urethane will adhere better to the slightly scuffed surface). I like the results and expect the finish to hold up well.
Untreated left light:

Treated right light:

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