It is a multipurpose maintenance product that not only disintegrates rust but also lubricates moving surfaces. It penetrates loosens seized assemblies, prevents friction noise and lubricates mechanical parts. It produces a highly water resistant film and provides long term corrosion protection. Hence it is ideal for breakdown and maintenance services. When the metallic part is sprayed with multifunctional fluid , its active ingredients attack the point where the rust and metal are bound together and consequently eliminate rust from the surface. If the surface is heavily rusted, leave it for a longer period for it to penetrate and act. Does not work on thermally welded nut & bolts.