Penn Synthetic Reel Oil was developed to assure optimum lubrication and protection against corrosion and rust. Penn Reel Oil will extend the life of your reel by protecting against rust and corrosion and the oil will offer smoother reel operation (longer casts and easy retrieval). Apply Penn Reel Oil to worm gears, ball bearings, spool shafts, rotor pins & springs, crank shafts and oscillating plates. For best results, thoroughly clean all parts with Penn Reel Cleaner and then apply Penn Reel Oil sparingly on all required parts.