Protect your vehicle's finish! Rule # 1 ALWAYS remove contaminants as soon as possible with soap and water. Gas, oil, bird droppings, tree sap, rain spots, salt, and tar can all destroy a vehicle's finish. Buy gentle cleaners made just for auto finishes. Never use dish soap and laundry soap to wash your vehicle. Wet the vehicle before applying soap. Use soft cloths. Avoid rotating brushes. Wax twice a year. Never wax right after refinishing. Never apply protectants to a dirty vehicle.