Here’s the easy way to remove oil spots without a lot of effort. If the spot is deeply embedded, or especially heavy, give it a good soaking with some sort of solvent—Simple Green works well, as does brake wash, carburetor cleaner or commercial concrete wash. When I was a kid, the guy I worked for used gasoline, but that’s about as dangerous an idea as I can think of, and I certainly don’t condone it. While the area is still wet, cover it with Speedi-Dri‚ or your choice of kitty litter. Allow the absorbent to work, the longer the better. Next, take a short length of 2x4 and, placing it wide side down, use it to “scrub” the material into the stain, just like you’d scrub a floor. Scrub until the Speedi-Dri has been reduced to powder. When you’re done, sweep it all up and admire your now-stainless floor.