Amazon.com: Hetman Light Rotor Lubricant 11 Light: Musical Instruments
I have played with oils designed for musical instruments for off label use and have found the #11 light rotor oil to be amazing at slicking up my Benchmades. Its not sticky and doesn't attract pocket lint or dirt. The oil is very thin and doesn't seem to stick around on flat surfaces but seem to have some staying power inside the pivot joint. A drop is all it takes to get the sluggishness out so a 1 ounce bottle should last a lifetime.