I thought I'd pass this information along for those of us who may have spilled a little oil on the garage floor....
Take some Mineral Spirits and pour the fluid onto spot, saturate it good and let it spread out 8-12 inches beyond the spot, then cover the entire area with cat litter, put it on thick, enough that you can't see the concrete and leave it set for a couple of hours...the newer clumping kind will absorb faster...sweep it up and you're done, if its an older stain you may have to repeat...make sure you leave the doors open you'll need the ventilation....just thought I pass it on..
