Would anyone know the proper lubricant for the metal shaft/bearings on projectors? For example, the shaft that holds the rubber wheel that contacts the shutter on Elmos.
Would 3-in-1 oil be ok? I know that any kind of grease would probably gum it up. I have a silent projector where the rubber wheel/pulley heats up considerably after a minute or two, causing the projector to slow down.
Thanks