5 min read — Summer 2026
An oil stain is one of the most stubborn marks a driveway can pick up. Whether it came from a parked car, a lawn mower, or a delivery vehicle, that dark spot tends to sit right in the middle of your concrete and refuse to leave. If you own a home or business in Covina, the San Gabriel Valley, or the Greater Los Angeles area, here is a practical guide to dealing with oil stains, and when it makes sense to bring in a professional.
Act quickly when you can. Fresh oil is far easier to remove than a stain that has had weeks to soak in. If you catch a spill early, blot up the excess with paper towels or a rag, then cover the spot with an absorbent material like cat litter, baking soda, or cornstarch. Let it sit for several hours so it can pull the oil out of the surface, then sweep it away.
Older stains need a degreaser. Southern California sun bakes oil deep into concrete, so set-in stains usually need a dedicated concrete degreaser or a poultice product. Apply it to the stain, give it time to work, and scrub with a stiff-bristle brush. You may need more than one round for a stain that has been there a while. Avoid wire brushes, which can scratch the surface.
Why a rinse alone rarely works. Plenty of homeowners try to blast an oil stain off with a garden hose or a rented pressure washer and end up frustrated. Water by itself spreads the oil instead of lifting it, and the wrong nozzle or too much pressure can etch the concrete or chip the edges. Oil removal is really about the right cleaning agent and dwell time, not just brute force.
Hot water and the right pressure make the difference. This is where professional equipment helps. A surface cleaner paired with the correct pressure and a proper degreaser breaks down oil and lifts it out evenly, instead of leaving a faded halo around the spot. Done right, the whole driveway comes out looking uniform rather than patchy.
Don't forget rust and battery stains. Covina driveways also collect rust marks from sprinklers, metal furniture, and planters, plus the occasional battery-acid spot. These call for a different treatment than oil, so it helps to identify the stain before you start scrubbing. Using the wrong product can set a stain rather than remove it.
Curb appeal and safety both matter. A clean driveway makes the whole front of a property look cared for, which matters whether you are hosting summer guests, listing a home, or running a business in the San Gabriel Valley. Removing oil and grease also reduces slick spots that can become a hazard on walkways and entryways.
If you have tried the home methods and an oil or rust stain still won't budge, professional service is usually the safer and more reliable choice. Big Jon's PowerWash Pros offers owner-operated, family-owned exterior surface cleaning for driveways, patios, decks, entryways, courtyards, garage floors, restaurant exteriors, dumpster areas, and commercial concrete.
If you are comparing local pressure washing options in Glendora, Covina, West Covina, La Verne, Pomona, Claremont, Diamond Bar, Walnut, or nearby SGV cities, call (626) 638-2162 for a free quote.
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