So here is the story, a family member of mine spilt two jugs of oil on my driveway and without thinking tried to use a hose to clean it. Problem is you cannot spill the oil into the road drainage, and watering down the oil just spread it everywhere. So without thinking, this person though he could use normal sand to soak up everything and then shovel it back up and throw it out(cat litter would be the optimal choice but this person was unaware). However instead of buying normal sand this person mistakenly purchased Sakrete which is a sand concrete mix. Now this person used the sakrete, and while it got rid of the oil it has now left terrible white stains on my asphalt driveway. I need to know if there is anyway to remove these stains from the driveway? The stains look like the sakrete mixed with water and was smudged all over and then it dried. I know there are types of acid I could use, but I was hoping someone might have another idea as to how to go about with this.