Oil stains on your concrete driveway don't have to be permanent eyesores. We've spent the last eight years perfecting techniques to remove oil stains from concrete driveways across Los Angeles, and here's what actually works in our desert climate. Those dark spots aren't just cosmetic issues. Oil penetrates deep into concrete's porous structure, creating slippery surfaces that become liability risks during LA's brief but intense rain seasons. Understanding Why Oil Stains Are