Amazing!! It worked!!
This stuff is great. I was skeptical it would remove an old oil stain, but it did. I tried a couple test spots and it appears the key is to pour it on thick and let it dry overnight. Just a thin layer isn't enough. See my before and after pics!! This oil stain was in the driveway of a house we just bought, so it's old, but I don't know how old.– S.G.