Use Fishing reel oil to lubricate all moving parts in fresh and salt water fishing reels. They can penetrate into tight spaces to lubricate small high speed bearings and between tight surfaces. Never use WD40 to lubricate a reel. WD40 is a degreaser. Which means it breaks down both grease and oil. The basic rule of thumb is to grease gears and oil everything else sparingly. Too much grease and oil impede the spool and reduce casting distance.