Cover the spot with a thick layer of cat litter. This will absorb any excess oil. Let it stand for several hours.
Sweep up the cat litter and dispose of it in a trash bag. Do not spread it into the soil or mulch of the yard.
Pour dark cola over the spot. Allow the fizzing soda to remain overnight.
Mix 2 tbsp. of dish detergent in 2 cups of water. Stir well.
Pour the detergent mixture onto the oil spot, mixing with the soda. Scrub the area with a scrub brush until the oil disappears.