I've had good luck with two unlikely products.
1. Cement. Straight out of the 94 pound bag. I use it as a sweeping
compound. It sucks the oil right out of the concrete. I've never tried
painting over it, though.
2. Liquid diswashing detergent. Not the kind you squirt in the sink, the
kind you squirt in the dishwasher. It works especially well outdoors where
the sun can later bleach it.


"Scott" wrote in message
...
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?


--
Scott
http://corbenflyer.tripod.com/
Building RV-4
Gotta Fly or Gonna Die