On Sat, 24 Sep 2016 20:19:34 -0700 (PDT), wrote:

I can experiment,

Be sure to start by testing which will not remove your paint. I suspect
that paint remover might be problematic.

Naptha has less additives; gasoline alone might stain the paint. In
either case, I suspect that black/brown from the sealer will persist,
especially if the paint is light-coloured and the paint is oil-based.