The idea is to keep spindle afloat when it spins so it needs very thin layer of oil every once in a while not only around ball bearing, but around the spindle as well. Firearm oil is ideal for that.
Michell Gyrodec, main bearing lube
I've had my Michell Gyrodec for a little less than ten years and have never lubed the main bearing since I did it during set up. Artech, its distributor, says it should be done every five to six years. Instructions for lubrication look very complicated and easily screwed up. Does anyone on this board have experience lubing the main bearing? How has that gone? Any cautions or suggestions based on experience?