This is unlikely to be helpful to most here but I'll throw it out there anyway. I've been using Tribolube. It's a synthetic (maybe lithium based?) aerospace grade grease. They, uh, gave me some at work. NASA prefers it for the space grade components my company builds. I'm not sure the specs on it offhand but the temperature range in which it will maintain its viscosity is something ridiculous. Not that we need that on our knives but it's still cool.
Anyway if you happen to have access to this or feel like spending $200+ for a small tub it works really great on my Sebenza! Gives it what is to me just the perfect opening resistance.