Driveway cleaning

[KOPBET]

I've got an issue with a brain-dead relative that continues to park an oil leaking automobile on my driveway in spite being asked repeatedly not to do so. I've also got acorns from my neighbor's tree being half eaten by squirrels and dropped on the driveway, which causes what appears to be immutable stains left behind. I have a pressure washer but I can't get the acorn stains off the concrete at all. I can lessen the oil stains but getting rid of them completely is another matter. I've tried off the shelf degreaser, muriatic acid (diluted), laundry detergent, and mineral spirits (mistake).

Any suggestions KNOWN to work? Bleach? Full strength muriatic? Or just give up and let nature do its thing for months on end?

 

[SoonerP226]

If you can get to it soon enough, Dawn dishwashing liquid works really well for removing oil from concrete, at least in my experience. I don’t think I’ve ever tried it on older stains though, usually just overflow and drops from changing my oil.

You might try washing with Dawn then, after it dries, use some clay kitty litter to see if that’ll lift and draw it out

 

[Firpo]

Dad always cleaned his with muriatic acid.

 

[SlugSlinger]

 

[rc508pir]

I have heard baking soda and vinegar also works on stains. No practicle exp tho

 

[GC7]

How strong is the power washer and which colored nozzle are you using?

 

[TinkerTanker]

Ive used Super Clean degreaser before with good results. Don't let it dry, but do let it sit.

 

[KOPBET]

How strong is the power washer and which colored nozzle are you using?

2600 psi. Yellow.

 

[KOPBET]

Purple Power was a waste of money. Haven't tried the others. Too expensive to just throw at it.

 

[KOPBET]

Dad always cleaned his with muriatic acid.

Full strength?