Best way to remove oil stains from concrete driveway?

Flo-dry, then dish soap.

that oil absorber stuff that is like kitty litter. sprinkle it on, let it sit, rub in with your foot a little and sweep up

LA's Totally Awesome from Dollar General. Spray it on your wheels and tires too before you wash your car.

depends on how much, but concentrated laundry detergent and a wire brush does wonders

If none of the above work to your satisfaction try TSP. If that doesn't work muriatic acid will, start with a weak mix with water and work up. Trouble is it will remove the concrete paste and expose aggregate if used too aggressively. Bare concrete is porus this is why many garages are epoxy painted or stained to prevent spills from being absorbed. If you are wanting to hide temporarily you can try and degrease with TSP and then spray paint to match

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I've used coca cola before and was successful.

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Yep,use oil dry first,and then Coke.

Coke is also really good for cleaning a windshield.

It has a good bit of acid in it,I can't believe people drink that stuff.

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Trouble is it will remove the concrete paste and expose aggregate if used too aggressively. Bare concrete is porus this is why many garages are epoxy painted or stained to prevent spills from being absorbed.

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Yep. People downvoting the absorbent posts have never actually seen what it can do over time to a deep stain. I work in a chemical plant where we routinely have to try and get oil out of concrete. I have tried every degreaser, soap, solvent, and cleaner there is and at best they will get the surface clean and at worst eat away at the concrete. Absorbent will actually draw it out over time. Anything will work with enough elbow grease and persistence but finely crushed absorbent is highly underrated.