Just spent 2 hours removing tar spots from the left side of my car. Diamondbrite didn't make it easier and likely was removed by my use of white spirit but it was that or mess around with the dealer and lose my car for a day or two while they sorted it. Tomorrow, right side, front and rear. BTW, polishing it doesn't destroy the finish. At least monthly after you wash it, you use the diamondbrite polish in water to refresh the polished finish. It's pretty much the same as a lot of the other polishes you add while washing.