Oil on concrete

Once the stain is set I've never been successful at removing it. If the stain is fairly new, you can get a commercial degreaser like Purple Power and spray all over the stain. Let it sit for awhile then pressure wash. This will lighten it. I've had some success with gasoline and also brake cleaner, but the brake cleaner can lighten the concrete compared to what's around it which sometimes just makes it look worse.

I have heard and read good things about this product: LINK . I've never had any personal experience with it though.

Cheap cat litter or oil absorbent from Napa. Same stuff.

Brake cleaner.

LINK

2x4

Pour gasoline over the stain and scrub it in with an old broom. Don’t blow yourself up. Get some oil dry and grind it in with your shoes, like someone else says. Sweep up the oil-dry and dispose of it safely.

I used to be a mechanic and this is how we used to keep the shop floor clean.

After the hard freeze last year by Super Duty with 6.7 started leaking oil around the oil pan. Something to do with the freeze breaking the pan seal or some shite. Read about it on the internet. At any rate, it leaked quite a bit. Tried all the home remediies (dawn, degreaser, acetone, hand cleaner, etc...) and Tide liquid probably did the best after I put in on heavy and then covered the oil stain with a piece of plywood so the Tide could really soak in for a few days. Pressure washed it afterward and repeated again. It helped but by no means came close to removing the stain.

I then bought some stuff called "Pull It Out" on Amazon. Had pretty good reviews overall. It worked decently. It's a milky thick white liquid you pour on the stain and let it dry. Then you brush the powder away. It lightened some of the stains quite a bit.

Nothing got rid of the stains but now they are much less noticeable.

Prosoco makes a product - Oil & Grease Stain Remover

I’ve always used Simple Green. Spray it on the oil spot once or twice and after couple rain days they are gone. But, I always treat them as soon as I get a spill so a stain that has been there a while might not be as easy to get rid of

Distilled vinegar will do a good job of making it less noticeable.