Clear Lemon Degreaser is an excellent choice for degreasing engines at self-service car washes and for use through hot or cold water high-pressure washes, degreasing heavy equipment, or fabricated industrial structures. It rinses easily with water leaving behind a surface that is totally film-free. It’s safe on untreated aluminum when used as directed. It contains no caustic soda, no caustic potash or solvents of any kind.