I don’t see it getting much better under any circumstances. Heat and a strong degreaser may help a little but it will never go away. The only way it will look any better is if the rest of the concrete was stained.
Why ask us what to do after the fact? The first thing that should have been done was put cat liter on for a couple of days. But since that wasn’t done you can use this
BT200™ | EatOils - It’s a fairly long process though to remove most of it.
Your expierence with this stuff is that it actually works? I’ve always wanted to try it but the time line and cost has been prohibitive. I seen one guy doing parking garages with them. But he is kinda out there. Come to find out, he’s coming out with his rebranded product.
FYI, I am reviving this. First oil stain customer that wasn’t happy with the results. I did warn them there would be a shadow but I thought with ZEP and Purple Power and hot water I’d be able to remove most of it. I did not. I saw the YouTube videos on this and went with a blow torch set at the very lowest setting. A small piece of concrete chipped off right in the middle of the stain. I am meeting with her tonight to discuss options on repairs/compensation. I do not recommend this method at all.
I have learned, to tell them OIL will never be fully removed from Concrete unless it’s soaked up immediately after the spill. Once it’s in - it’s in. We can take/remove the top surface but the shadow will always be there.
Do not make my mistake and this method unless your ready to pay for it to be repaired.
Several times I’ve mushed caustic beads into a wet paste on an oil stain on a driveway and got alot of it out. Works for a can of oil based deck stain accidently kicked over in a driveway too… Attempt at own risk.