Even a well-maintained car can spring an occasional leak, leaving a puddle of oil where it's parked. Grease and oil stains are notoriously difficult to remove, particularly from porous materials such as concrete. Even if your driveway is made of asphalt, cleaning up the oil can still be a challenge as it tends to cling to most surface materials. Fortunately, you can remove motor oil leaks with a few basic supplies and everyday household items. As with all spills, the sooner you clean the oil, the easier it is to remove.
Spread a ½-inch layer of clay-type kitty litter over the oil. Rub the litter lightly with your foot, working the absorbent material into the spill. Wait 30 to 45 minutes, then sweep the litter up and throw it away.
Cover any remaining oil with a thick layer of powdered laundry detergent. Scrub the detergent into the surface of the spill with a stiff-bristled brush. Rinse with cold water.
Pour 1 cup of powdered detergent into a large bowl. Add enough water to make a stiff paste. Spread the paste over any dark stains or discolorations. Scour the stain with a nylon scrub pad, working the paste into a thin lather. Leave the mixture in place for 24 hours, then rinse it with clear water.
Coat stubborn stains with commercial oven cleaner. Spray the affected area and wait 15 to 30 minutes. Scrub the stains vigorously with a wire brush, wearing a pair of protective gloves. Rinse well with cool water. If any discoloration remains, repeat the cleaning process.