Oil stains on asphalt driveways are more than just an eyesore—they can compromise the surface integrity of the pavement, accelerate deterioration, and make it harder for future maintenance applications like sealcoating to adhere properly. Whether you’re dealing with fresh drips from your car or old, baked-in blotches, using a commercial-grade degreaser can be one of the most effective ways to restore your driveway.
In this guide, we’ll explore what commercial-grade degreasers are, how they work, where to buy them, and how to use them properly. We’ll also share popular tips and tricks for getting your asphalt looking as good as new.
Why Oil Stains Are a Problem for Asphalt Driveways
Asphalt is a petroleum-based material, which means oil stains can soften and break down its surface over time. When oil penetrates the surface, it disrupts the binder that holds the aggregate together, leading to premature cracking, raveling, and pothole formation. This also interferes with routine maintenance. For example, applying sealcoating over oil-contaminated pavement can result in peeling or poor adhesion.
That’s why it’s crucial to clean oil stains thoroughly and as soon as possible.
What Are Commercial-Grade Degreasers?
Commercial-grade degreasers are heavy-duty cleaners formulated to break down and remove tough grease, oil, and grime from hard surfaces. Unlike household cleaners, these degreasers are designed to penetrate porous materials like asphalt and emulsify the oil so it can be washed away.
Common ingredients include:
- Surfactants: to lift oil from the surface
- Emulsifiers: to break the oil into smaller droplets
- Solvents (citrus-based or chemical): to dissolve hydrocarbons
- Alkaline agents (like sodium hydroxide): for deep cleaning
Some degreasers are biodegradable and safe for the environment, while others may require careful handling due to their strength.
Top Commercial-Grade Degreasers for Asphalt Oil Stains
Here are several reliable options you can find at major retailers:
Oil Eater Cleaner & Degreaser
- Where to buy: Home Depot, Walmart
- Biodegradable and non-toxic
- Highly concentrated; can be diluted
- Excellent for both fresh and older stains
Zep Industrial Purple Degreaser
- Where to buy: Home Depot
- High-alkaline formula
- Strong enough for auto shops and garages
- Use with caution; gloves and eye protection recommended
Simple Green Pro HD Heavy-Duty Cleaner
- Where to buy: Walmart, Home Depot
- Non-corrosive, non-acidic
- Safe for asphalt and sealed surfaces
- Good all-around cleaner for garage and outdoor use
Purple Power Industrial Cleaner/Degreaser
- Where to buy: Walmart
- Very affordable
- Fast-acting and highly effective
- Requires proper disposal to avoid environmental damage
How to Use a Commercial Degreaser on Asphalt Oil Stains
Step-by-step Instructions:
- Remove surface debris. Sweep the area clean of dirt, leaves, and gravel.
- Apply the degreaser. Follow label instructions for dilution. Spray or pour directly onto the oil stain.
- Let it soak. Allow the degreaser to sit for 5 to 15 minutes, depending on the product. This dwell time helps penetrate and loosen the oil.
- Scrub with a stiff-bristled brush. Work the product into the stain using circular motions.
- Rinse thoroughly. Use a hose or, preferably, a power washer to remove the degreaser and emulsified oil. Repeat if needed.
- Let dry. Allow the area to dry fully before considering sealcoating or other treatments.
Tips and Tricks from the Pros
- Act quickly: The sooner you treat a stain, the easier it is to remove.
- Avoid pressure washing before applying degreaser: Doing so can push the oil deeper into the asphalt.
- Don’t use kitty litter alone: While it can absorb surface oil, it won’t clean the residue left behind.
- Use hot water if safe: Warm water can improve the degreaser’s effectiveness but check product instructions first.
- Reapply if needed: Stubborn stains might require 2-3 applications for complete removal.
What If the Stains Won’t Come Out?
If oil has soaked deep into the asphalt or has been sitting for years, even the best degreasers might not fully remove the discoloration. In these cases, you have two options:
- Sealcoating the surface
If the stain is only cosmetic, consider sealcoating to restore a uniform black finish. Just make sure the oil has been cleaned thoroughly and the surface is dry and oil-free first. - Replacing the affected area
For severe damage or long-term softening of the asphalt, installing new asphalt in the damaged section may be the best long-term solution.
Final Thoughts
Oil stains are common, but they don’t have to ruin the look or longevity of your asphalt driveway. Commercial-grade degreasers, when used correctly, are powerful tools that can restore your pavement’s appearance and protect its structural integrity. For best results, act quickly, use the right product, and don’t hesitate to call a professional if the damage is too severe.
If you’re in need of long-term driveway maintenance, consider investing in sealcoating services or, for more serious cases, a complete asphalt installation to restore the surface to pristine condition.
