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When I was young I remember watching my dad pour a little gas on the oil spots in the driveway, let them sit for a few minutes (gas will most likely be evaporated by then) then he poured a wee-bit more and then lit it on fire.. Then he pressure washed the driveway.. partly cause it was covered in pine needles and moss, but also due to the oil..
Paint the driveway black...Dont light gas on it as it could cause the concrete to explode.. and youll be left with holes.Get silt from Rubicon Springs as that seems to stick to everything and covers what it touches..Gunk do a foaming water rinsable degreaser.. use that.Or dig the driveway up and cover it in boulders which would be far more appropriate
First of all, congrats on the house!!!! Second, be careful with gas, it will eat through the concrete as well lol. I typically just rinse with water and soap and wait a few days.
The lighting it on fire is the same as why you never weld directly on top of concrete. It'll heat the water up inside and cause it to expand. Which will cause the concrete to blow up.