Oil stains on the driveway are bad enough, but they are even worse when they are located within your enclosed garage. There is one trick to try that helps eliminate oil stains in the garage.
First, place newspaper or cardboard over the stain to soak up excess oil. Then remove the newspaper are cardboard. Next place kitty litter over top of the stain, about half an inch thick, or thicker if it is a big stain. Just buy the most inexpensive kitty litter, your garage doesn’t care if it is scented or not!
Allow the kitty litter to sit for several hours or overnight. Then sweep up and dispose of the kitty litter. If there is a drain, you can powerwash it afterwards to remove the dark stain (most or all of the oil will be soaked up by the kitty litter).
Do be aware if there are any regulations where you reside regarding the disposale of oil-soaked materials.