cleaning oil off of driveways

auto zone has the castrol concrete cleaner or castrol super clean or oil eater (that's the brand name) pour it on, wait a min or 2 (using a push broom helps it go faster & look better) then hose it off.

PURPLE POWER AND A HOSE WORKS FINE FOR MY DRIVEWAY.

I use Charcoal lighter fluid on mine.Pour it on wait 5 minutes and spray it of with a hose.Takes it out no matter how long it's been there.

the stuff we use in our shop is called driv up you just spray it on and wash it off with a hose works great we also use spitfire

The oil eater dtuff mentioned above works really well. I saw my lil brother using it at the Jiffy Lube where he used to work and was pretty impressed with how well and fast it worked.

Engine degreasers left me with out stains for years and if theres one thing i suck at its being clean when changing fluids in my vehicles

litter will work even on deep stains. You just have to grind it in.

driveway cleaner works great, it has muratic acid as well.

X2 on Purple Power Cleaner

I've heard lighter fluid does the trick.