besides Gunk? Will acetone work? How about carburetor cleaner? I've got some other strong solvents in the basement that I can maybe use.
Get as much up as you can with paper towels and rags, then make a paste out of Tide laundry detergent (powdered) and let it it for a while keeping it wet. Then take a stiff bristle brush and scrub.
I've used gas and sawdust, sweep it around with a stiff broom. It'll take the bulk of it off so you don't track it in the house. After that Sunlight dish soap will take most of the stain out [sometimes].
I bought that acid to remove stains from wet concrete on brick and I have not yet used it. And I have a radio in the basement that I have been meaning to install in my truck since 2003. It seems those oil stains from when I replaced a head gasket are not very noticeable so I guess now I may never do it. :beer:
I used some RED coloured kitty litter on my new driveway (squished it into every oil drop) now I've got red spots all over the place.