Food & Grease Stains
How to Get Motor Oil Out of a Concrete Garage Floor: Fresh and Dried Stains
Motor oil on a concrete garage floor can leave a stubborn dark stain. Here's a practical guide for fresh and dried spills, with concrete-specific precautions and what to avoid.
Part 2: Step-by-step method
- Apply a degreaser: Use a commercial concrete degreaser or a homemade paste of baking soda and water. Spread it over the stain.
- Let it sit: Allow the degreaser to sit for 15-20 minutes to penetrate the oil.
- Scrub vigorously: Use a stiff brush to scrub the area. For tough stains, you may need to let it sit longer.
- Rinse with hot water: Rinse the area with hot water to wash away the degreaser and oil.
- Repeat as necessary: Dried stains may require multiple treatments. Be patient.
What Not to Do
- Avoid using bleach: Bleach can lighten concrete and may not effectively break down oil.
- Don't use a pressure washer on fresh spills: It can spread the oil further into the concrete.
- Avoid harsh solvents: Products like paint thinner can be dangerous and may damage the concrete.
Fresh vs. Dried: Key Differences
Fresh oil is easier to remove because it hasn't fully soaked in. Dried oil requires more time and a stronger degreaser. For fresh spills, absorption is key; for dried, you need to break down the grease.
Concrete-Specific Precautions
Concrete is porous, so oil can seep deep. Always test any cleaner on a small, hidden area first. Avoid using acid-based cleaners, as they can etch the surface. If the stain is very old or large, you may need to call a professional.