Product to remove oil stains from concrete for painting?

In article ,
Scott wrote:

I'm looking to find some product that can remove oil stains from
concrete so that paint will stick. My shop used to be used by a car
mechanic and now that I build airplanes in it, I'd like to paint the
floor a very light gray or off-white. I don't think that just using
"Gunk" will remove it enough to get the paint to stick. Maybe some sort
of epoxy-like sealer first? Any ideas?


Get the stuff from any automitive supply place, or try "Kitty Litter."