How to get an oil stain out of a concrete driveway?

Question

my mother in laws trucked leaked alot of oil onto our new concrete driveway anyone know how to get it out its already dried

Answer 1

Wisk, water and scrub!

Answer 2

Buy acid at home improvement store.

Answer 3

My son recently dumped 3 quarts of oil on my driveway while changing his oil. I did the following:

Step 1 - Used oil dry (like kitty litter) to pick up most of the oil

Step 2 - Spread laundry detergent over the stain, added a small amount of water and scrubbed the stain throughly.

Step 3 - Rinsed with copious amounts of water from highest pressure I could get from my garden hose.

Step 4 - Wait 3 months or so and it will be essentially gone.

Alternatively you could rent a pressure washer. I hear they make quick work of concrete stains.