Heavy Duty Degreaser/Cleaner. Radical Red is a heavy duty degreaser with our new multiphase formula with special surfactant, wetting agents, emulsiliers and detergents to create an outstanding concentrated degreaser. Radical Red is non-flammable and biodegradable. This product out performs most acidic style cleaners, solvent degreasers and other water soluble degreasers. Radical Red dilution ratios vary according to the degree of contamination. Dilute up to 50:1 for general cleaning and dilute 4:1 for wheels, tires, engines, undercarriage, etc.