Who is making the best nut lube? The Gear Page So I have a fender, an epiphone, and a Yamaha. All with vintage tuners. What's the best lubricant for these tuners? They're all perfect; and don't need to be changed, althoughI have Amazon.com: KeyTone Line Guitar Lubricant For Nut slots, Tuning Machines, String Performance : Musical Instruments Don't Replace Your Strings Restore Them. Every time you play, your strings collect sweat, oil, and buildup that slowly kills your sound. Big Bends GEM TONE String Wipes bring them back Reviving and maintaining old (and new) tuning machines Lubricating guitar tuners StewMac