Restoring concrete with old oil stains involves careful cleaning and preservation. Learning how to remove old oil stains from concrete is key to successful restoration. Begin by treating the oil stains with a degreaser or natural cleaning methods like baking soda or vinegar. After cleaning, seal the concrete to prevent future stains and enhance its durability. Concrete sealers act as a protective barrier, helping to repel oils and liquids. Sealing the surface after oil stain removal helps maintain its pristine look and prevents stains from seeping in.