Grease Free is a concentrated water base power cleaner and degreaser. It dilutes with water and cleans a variety of surfaces. For engines and greasy door jams, dilute one part of GF with three parts of water. For medium duty degreasing, dilute one part of GF with nine parts of water. For general cleaning, dewaxing or other light duty work, dilute one part of GF with nineteen parts of water. Safe for most under-the-hood rubber and plastic parts. Great for stubborn spots and stains.