Crown's Penetrating Oil loosens rust and corrosion formed by alkali, fruit acids, water, and electrolytes. Low surface tension allows the oil to migrate into tight spaces and along threaded fasteners. Reduces the tugging and pounding sometimes required to loosen screws and bolts. Loosens tar, dirt, and carbon on stubborn, rusted bolts. For use in manufacturing facilities. Benefits: Utilizing biorenewable resources, Crown #6030 contains no acid and is effective against salt water corrosion. It has a fast penetrating action and displaces moisture. It makes disassembly of parts possible with savings in time and material.