I had someone drop a good size 3x4 foot thst pressure washer alone did not get up rest is like day it was,poured in 2008.
What's my best bet to get it up or at least make it not as bad.
Other than full on diluted muratic acid. I may do that last resort.

Acid doesn't clean, it eats.... eats concrete that is.

I've had success in covering the stain with cheap kitty litter, soaking it with water, which floats the oil up and the kitty litter sucks it in. just soak it and let it dry. Don't flood it so that the litter washed off.

Did you use anything prior to the pressure wash? Was it cold of hot water from the washer?

Super clean IMO has a slight edge to purple power when cleaning. I have used brake clean and folded paper towels with great success. Spray the cleaner, put the folded towel down and stand on it, But on that large of an area pig mat works better with the brake clean. Having already been pressure washed I'm not sure if it would be as effective but you could try a small area with the paper towels. If not, Super clean, let is soak a bit and brush it with a shop broom, (might even cover it to slow evaporation if needed) but not for too long as I've had it discolor the concrete. Then pressure wash again and wait until thoroughly dry,. I say thoroughly as sometimes the concrete retains a small portion of the cleaner or moisture and will appear as though the stain is still visible but once completely dry it's gone.
let us know what works

Gas or lacquar thinner and a parts scrub brush, then water. Never straight acid concrete.

i have always used oil dry or kitty litter on an oil spill. let it soak, then sweep up the mess.
then, re-apply and grind it in with my shoe[s]. do that until the oil dry or kitty litter is just a powder, [no kernels] then sweep it up.
that usually just leaves a very faint outline of the spill. until the next time i miss the drain pan.
of course i don't have a nice floor in the garage to start with.

Cat litter and a block of wood to grind it in. Also solvent seems to help float the residue up out of the concrete.

Also heard of people lighting their driveways on fire too.

DAWN SOAP ...WET... SCRUB IT FOR A FEW SECONDS AND WALK AWAY...DO NOT RINSE IT.... MINE IS ALMOST UN NOTICABLE NOW..

Yepper to Purple

https://www.oreillyauto.com/detail/...dge-charger?q=Driveway+cleaner&pos=0

After I used it with 100% satisfaction I gave the other half of the bottle to a co worker who had an oil stain in his driveway for years he said

He couldn’t of been happier

It is very very sudsy sort of speak , but man it worked

It can also be slippery and will de-oil your hands leaving them feeling like 1000 grit sandpaper for a week or so unless one wears gloves

On small fresh spots of oil I have used starter fluid to remove oil from concrete.

I get many compliments on this..try it
https://youtu.be/ocizZGFmDaE

yes Purple Power or Simple Green, spray scrub and walk away. I have used dawn soap as well same result!!

Pour-N-Restore works good for removing oil stains in concrete, but is pricy and not really that easy to use.
A Gallon is $55
https://www.pour-n-restore.com/products/oil-stain-remover.html

They sell it at Lowes and ACE hardware, not sure about Home Depot?
The issue is when it has been sitting for a period of time, all the solids clump up at the bottom of the bottle, and it needs to be well mixed before using it.
When it is all mixed, it pours like thick pancake batter, and sort of sets up thick layer of the mud/clay like stuff over the oil stain.
You let it sit a day or more and it pulls the oil out of the concrete into the clay. When the clay dries, you are suppose to sweep it up, but it dries hard, and is easier to scrape up with a flat shovel.

Sounds like crushed cat litter with water added

i use dry Portland cement~! spread it over it with a broom to work it in to the surface and let it soak it up! wash it off and re-apply if needed.

I used brake clean few times sopping it up with towels followed by a degreaser I had here.
Had a gallon of degreaser that said could be used full or diluted in my cabinet. The degreaser I have is no longer made.

90 percent looks good.
Will go over the part again that needs it, before we pressure wash.
It looked really bad before, and was scared I would drive it in or make it bigger making it worse. So thanks for the replies.

If you rinsed with water, sometimes it will leave a visible stain that is usually due to the moisture etc. might give it a day or so depending on sun/ temps etc. to completely dry out glad you got most of it out. I've always kept my driveway spotless. Normally using brake clean and a wadded up paper towel which i have found works better if you stand on it

Yes I let it dry I did it Monday. Looks better today. Wanted to see what it looked like dry.
As hard to see how well it looked wet.
Going to get the last of it better and then pressure wash all.tge flat work

i'm glad my driveway is gravel. i have too many "drippers" to contend with, and my "bus" REALLY leaks when it is warm because of all the oil that gets pumped into all upper areas plus the underneath to keep rust at bay.