1947 Indian Chief Corbin Speedometer lube

[Fredthecat]

What should be used to lube original 1947 Indian Corbin speedometer head (externally, without removing bezel)?
What should be used if unit opened, bezel removed?

What should be used to lube new JGreer speedometer cable for same?

What should be used to lube original Corbin speedometer drive gear (while apart and later through zerc)?

Thanks
Fredthecat