Hello, New Tormek T7 user here. Been getting acquainted with my machine by sharpening some old knives and scissors which had some rust on them. I noticed that some of the rusty water dripped down between the collar and micro threads and decided to start a colony. That's a no-no so I decided to disassemble the machine and give the inside of the collars and the micro threads a cleaning and spritz of WD-40. Then I noticed that the main shaft grease that the stone mounts to is dry.
So my question is, should I wipe the dry stuff off and apply some fresh? If so, what type grease is recommended? Will any petroleum based lube work?