Buffing is commonly done with a high-speed polisher or buffer for large vehicles. It is used to remove oxidation, scratches and other impurities from the bus surface. A polisher or buffer works by temporarily heating the paint’s clear coat until is softens into a viscous liquid that fills in and dissipates blemishes. The buffed part will reflect light and appear shiny. Swirl marks caused by buffing can be eliminated by wetting with a damp cloth and dusting with talcum powder or corn starch. Buff lightly until the swirls disappear. To protect the surface and paint, only do this once a year. Using a polish conditions and restores oils to the surface and will result in a brilliant gloss.
Wax is a protector. It will shield your bus from grime, oil, and grit from the road and protect the high-gloss finish from the elements. Waxing should be done on a clean, dry bus and according to the manufacturer’s instructions. To avoid oxidation of the paint, you should wax your bus at least every couple of months or so.