Hot water from faucets doesn't kill germs and anti-bacterial

[Warpy]

5. That applies to meat grease on dishes, not to hands, clothing

or much else. Hot water sets grease stains into fabrics. Soap and detergent bond to oil molecules and dissolve them away,. Hard grease needs to be liquefied in order for that to work.

Best thing to do with clothing stained with motor oil or other heavy grease is to soak it for 24 hours in cool water with Dawn detergent worked into the grease, then wash as usual. Dawn is the go-to for processing greasy fleece into something a crafter wants to touch.