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Question... my father has a Nissan Sentra from the 90s that has the paint peeling problem. It's not down to metal so it may be able to be restored with some heavy polishing, but if not... I saw cheap Duplicolor Clearcoat Laquer "ready to spray" at Pep Boys. Would this be compatible with OEM paint if I rolled it on to bring back a shine?



That sounds like clear coat failure. No amount of polishing will correct that.

As for rolling on clear coat, I can't tell you anything about that. Maybe somebody here has some ideas.