FVP's Penetrating Oil is a lubricant and penetrant. Special additives loosen rust and soak into subsurface areas. Loosens rust and corrosion almost immediately. Penetrates into cracks, crevices and threads freeing bolts, lug nuts and fasteners. Noticeable squeaks are silenced by friction-reducing lubricants. May be used as a cleaner to remove tar, grease, oil and adhesives. 1- 11oz bottle.