Cre-Oil Penetrating Oil cuts through grease, oils, and debris, to reach corroded threads and break rusted parts free, leaving a long-lasting protective film that prevents future rust and corrosion. It's also formulated to chemically loosen the surface tension of rust and corrosion, allowing frozen nuts and bolts to be quickly disassembled. The penetrating oil can be used in automotive, industrial, farm and marine applications. Because of its low odor properties, it can be used in areas where an offensive odor cannot be tolerated.