Concrete pavers aren’t damaged by petroleum products, but driveway oil leak stains from cars can be difficult to remove. Stains should be treated as soon as possible. The longer they remain on the surface, the deeper they penetrate and are harder to remove.
First, wipe excess oil from the surface and apply liquid detergent. Allow it to soak for several minutes and wash the pavers with hot water. Several treatments may be necessary to remove particularly stubborn stains. For best results use cleaners specially made for removing oil stains from concrete paves. Keep in mind that due to their modular nature and ease of replacement it is simple to replace severely stained or damaged pavers when needed.
Cleaning and sealing concrete pavers early in their life can make removing stains easier, since sealers prevent stains from soaking into the surface. The sealers may need to be reapplied from time to time due to wear and weather. Concrete pavers should be cleaned prior to sealer application to obtain the best performance and appearance.
Removing oil and many other stains is discussed in Tech Spec 5 – Cleaning and Sealing Interlocking Concrete pavement – A Maintenance and Protection Guide. A thorough review of stain removal is also addressed in the booklet, Removing Stains from Concrete, The Aberdeen Group. Your paver supplier can provide information on cleaners and sealers specifically made for concrete pavers.