[Zeke]

When dipso says "hot" is a solvent rating system, what he means is rate of evaporation. The xylene I mentioned is slow to evaporate and is used to retard lacquer thinner in hot weather. The "hot" thinner additive in this scenario is toluene.

So, xylene may work to soften the paint before evaporating. The reason to use the soft rag is to keep the surface wet while you rub. You can "feel" the paint. I don't know what's in Goof Off, but it hasn't done well for me. It can't be anything too far from what we are talking about. It's a compound of solvents and light oils.