Well truthfully, I took my driveway cleaner, same as simple green diluted soaked the entire car let it set for 15 minutes. Used a hot soaked cotton towel and scrubbed with very little effort. The old grim slid off the pain. I was amazed when wiping it down. Looked like the old wax commercial this now that side. Work extremely well for this projects old paint. I did no chrome polish yet that is the chrome after a bath.