Removing motor oil from garage floor

My son just bought a house where the previous owner's car must have leaked oil onto the garage floor for years. Looking for product recommendations for removing said oil stain from the floor. I'd like to get it clean enough to then do a floor coating of some type. Suggestions appreciated.

 

Gasoline, scrub brush, and elbow grease!

 

This is suppose to work pretty well. Uses microorganisms to naturally eat and break down the oil. Just spread it, then sweep it up later.

http://www.actcleaners.com/Clean_concrete_cleaner_s/1.htm

 

try liquid dish soap... put it over the stains and let it sit for a day... you can try agitating it a little w/ a brush, ...use the soap liberally... try rinsing it off after a day or so, ...it should help diminish the stain

 

Tide, believe it or not.

 

http://www.newpig.com/pig/US/

 

Hot soapy water through a pressure washer

 

1 to 3 mixed simple green and hot water. That's how we mop oil spills in the machine shop I work.

 

Thanks for all the suggestions guys. I'll start with the Simple Green since I have a gallon on the shelf.

 

Simple green 50/50 heated is what I use works well too, and of course a stout brush and elbow grease as previously mentioned.

 

Carb cleaner and a brush or mean green/simple green and a brush (what i use at the house garage). I used to have some industrial floor cleaner from cleaning a tire shop but i don't remember the name of it.

 

I'd figure out what kind of coating you plan on putting on the floor as they may specify what type of floor cleaning and prep would be required. I'd use as little water as possible, concrete absorbs water and can cause problems for future floor coverings. Try just putting down kitty litter, grind it in with your foot and use a heat gun on the slab in that area. Keep grinding the kitty littler in with your foot every so often as you heat it then sweep the kitty litter away.

 

Mix a box of baking soda with the Simple Green into a paste. Scrub the paste into the stain and let it stay there for a few days. Rinse and repeat.
Whatever the Simple Green does not emulsify, the baking soda will absorb.

Chris

 

When I drip some on the floor, I grind mulch into the spot and leave it over night. Sweep it up and the stain is gone.

 

Thanks again guys. Went with warmed up Simple Green and mixed it with an oil absorbent product I had access to. Let it sit most of the day and scrubbed with a stiff brush. Most of it came up. Going to do a second application to see it I can get it all this time.