Use a push broom to sweep the driveway very well. Use a shop vacuum to clean up any remaining loose debris in the area. Use soap and water and a stiff-bristle brush to finish cleaning the driveway. If engine oil has leaked onto the asphalt, use a specially formulated cleaning solution to remove it.
Barricade the driveway to prevent cars from entering before the sealant has had a chance to dry. Cover any plants or landscaping with plastic to prevent the chemicals from spilling into unwanted areas. Apply sealant according to manufacturer's instructions. Use a special brush and squeegee to spread it uniformly across the surface.