I started out by applying/spreading the compound @ 1000 RPM and then up to 1200-1400 RPM. For some of the area that's needed a little additional effort to remove stubborn water spots I ran up to 1500-1700 RPM. It all depends upon the conditioning your paint, pad used and compound used. I would start out easy and ramp up once you feel more comfortable or feel the need to, better to be cautious than regret it.