Use lithium grease on the plastic gears. Not oil. You only use oil inside the spindle motor. Ah! Makes sense, ruined my other laser mech with silicone aerosol, which is extremely oil-like, and wouldn't want that to happen with the replacement I just got. Used actual white lithium grease on the gear...

I feel comfortable using white lithium on the sleds, but the plastic gears not sure what to use. Don't want to gunk up anything there. Do I use silicone aerosol on the plastic gears on a cotton swab, or sewing machine oil? Sorry, sorta new to this thanks.

Hate to bother you folks again, but the plastic gears don't need any lubrication if I'm correct? Used white lithium only on the sled, the metal gear and the metal motor gear next to it, but another one is pretty much all plastic, except for the sleds of course.

Appreciate all the responses folks! I've got some white lithium grease, which is what I'm using from now on!

I have silicone grease and sewing machine oil as a mix, but to better replicate what was done there, is white lithium grease safe enough for lubricating the rails and gears as shown in the video? I've never heard of sprayable vaseline, is why I'm asking, thanks! Oh, and pardon the sudden bump, just ...