Motor oil stains on your driveway. They’re inevitable. If a car is leaking oil and needs repair, or if there’s a spill while the oil is being changed, a driveway will eventually accumulate these all-too-familiar splotches. If left unaddressed these unsightly blemishes can kill your curb appeal when you put your flip on the market. Some flipping pros estimate that you’d have to spend up to $10,000 to jackhammer and replace your heavily-stained driveway, or shell-out a pretty penny to have it resurfaced. Luckily you don’t have to take either of those budget-busting routes to remedy this problem. Here’s a