Car question

that's why I prefer to remove the porous oxidation layer with sandpaper and then polish the newly exposed material

polishing the old surface is a temporary fix



@Broony....if you have 2000 it will be fine...just spend a lot of time on it ..then polish by the directions on the plastx label ...the more time you put in the better it will turn out...also I prefer taking lenses off the car and doing the sanding on a workbench to minimize the chance of touching paint with the sandpaper...