Degreasers and degreasing equipment remove grease, oil, lubricants, or other organic films from parts using aqueous cleaners or solvent vapors. Degreasers and degreasing equipment are essentially ...
Once you've gotten as much of the oil off as you can, take a hose and a small amount of degreasing agent (such as dish soap) and wash the engine casing to get rid of any residual residue.