The 'Rinse' stage in The Motohut Method: What does it do? For dirty or poorly looked after vehicles, traffic film removing pre-washes are strong cleaning agents great at rinsing away road film, built-up grit & dirt, crusty salt, pollen, and bugs from wheels, arches, and the lower third of the body. Really stubborn contamination left over after the pre-wash treatment is dealt with during the next stage. Don't allow pre-washes to linger, and rinse them off quickly after application. If necessary work in sections.