I find it depends on the knife. Sometimes I use nano oil, sometime I use grease. Sometimes I use both, nano oil for the pivot, grease for the ball detent track. There are also different weights for nano oil, that can make a big difference. So I typically try nano oil, if it doesn’t work I try something else. Play around with it and see what works for you.
Most recently acquired: DLC Yojimbo 2, Native Chief, Shaman S90V, Para 3 LW, Ikuchi, UKPK, Smock, SUBVERT, Amalgam, Para 3 CTS-XHP, Kapara, Paramilitary 2 M390
Grail Paramilitary 2 M390 X 2! ACHIEVED!!
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