How to Remove Oil Stains From Your Drive
Things You'll Need
" Muriatic acid (available at a hardware or janitorial supply store)
" Stiff Brush Or Push Broom
" Garden Hose
" Plastic Bucket
" Commercial Concrete Cleaner Or Grease Solvent
" Safety Goggles
" Automatic Dishwasher Detergent
" Rubber Or Latex Gloves
" Dishwashing Liquid
" Pressure washer (to rent one, look under Pressure Washing Equipment in the yellow pages)
" Baking soda, cornmeal or sawdust
o 1 Pour cola on the oily or dry stained areas, and leave the cola on overnight. Squirt a generous amount of dishwashing liquid into a bucket until you have a good lather. Rinse with the soapy water, then with a garden hose.
o 2 Sprinkle baking soda or an absorbent powder such as cornmeal or sawdust on the oily spots. If the stain is dry, wet it first to make a scouring paste. Scrub with a stiff brush or push broom.
o 3 Sprinkle automatic dishwasher detergent on the oily concrete. Leave it for several minutes, then pour boiling water on the stained area. Scrub with a stiff brush or push broom, then rinse.
o 4 Try a commercial concrete cleaner such as Garage and Driveway Cleaner by Red Devil Co. or a grease solvent such as Benzine. Follow the manufacturer's instructions.
o 5 Sprinkle trisodium phosphate (TSP) on the oily concrete. If the stain is dry, wet it first. Let it stand for 30 minutes. Scrub using a stiff broom. TSP is a dangerous product; if you must use it, wear rubber or latex gloves, safety goggles and protective clothing. Also, never wash a TSP product down storm drains.
o 6 As a last resort, combat tough spills with muriatic acid and a pressure washer. Apply the acid following the manufacturer's directions, and let it soak for several seconds. Follow with a pressure washer set at 2,500 to 3,000 lbs. per square inch (psi), or 176 to 211 kg per square cm. Like TSP, muriatic acid is a dangerous product; likewise, if you must use it, wear rubber or latex gloves, safety goggles and protective clothing, and never wash such a product down storm drains.
o 7 After trying any of the strategies above, sprinkle baking soda over the cleaned area to neutralize the solution you've used.