How to Remove Oil Stains from a Concrete Driveway

Concrete is essentially a hardened sponge, a fact that becomes painfully obvious the moment a leaky engine leaves its mark. Because concrete is porous, oil doesn't just sit on the surface; it wicks deep into the capillaries of the slab, making surface-level scrubbing largely ineffective. To truly clean it, you need to draw the oil out of the stone, rather than just pushing it around. Done well, this process restores the uniform grey of your driveway without leaving a tell-tale clean spot that looks just as jarring as the stain itself. Patience is your most important tool here, as the chemical reaction required to emulsify deep-set petroleum takes time to work. Don't rush the drying or the scrubbing, or you will find yourself repeating the work by next weekend.

  1. Soak It Up Fast. If the oil is still wet, cover the area immediately with a thick layer of cat litter, sawdust, or cornstarch. Leave it to sit for at least four hours to soak up as much liquid as possible, then sweep it up and dispose of it properly.
  2. Penetrate the Pores. Spray or pour a heavy-duty concrete degreaser directly onto the stain. Work it into the concrete using a stiff-bristled nylon scrub brush, using circular motions to ensure the product penetrates the textured surface.
  3. Patience Breaks the Bond. Let the degreaser sit on the surface for 15 to 20 minutes, but do not allow it to dry completely. If the liquid begins to evaporate, mist it lightly with water to keep it active.
  4. Elbow Grease Wins. Apply a second, lighter coating of degreaser and scrub the area again with significant pressure. You should see a brown or dark sudsy foam forming as the oil is lifted from the pores.
  5. Flush Away the Residue. Rinse the area with a high-pressure garden hose nozzle. Do not use a high-powered pressure washer on older concrete as it can damage the surface aggregate, but use enough water volume to flush away the emulsified oil and soap.
  6. Verify the Victory. Once the concrete dries, inspect the area. If a faint shadow remains, repeat the process with a concentrated paste of detergent and water, letting it sit overnight before rinsing.