I had a car with an oil leak. The car served its usefulness and was hauled away but I'm left with an oil patch residue.
My friend has a water compressor and I suppose I could blast away at it but from what I've heard oil and water don't mix. Besides, that water would get into the storm drain. There's enough junk going inside the storm drains I don't want to add my share. Is there something, like an enzyme, I can get at a hardware store that can eat away the oil residue?
Thanks in advance for any advice you can provide.