Originally Posted by
Dalronix
Interestingly, not one vintage Singer manual that I've read mentions using grease on gears. They all clearly describe sewing machine oil only.
I'm curious which vintage Singer manuals you have seen that actually have gears that say to oil the gears. The 201 manual does say to use oil on the gears, however the 101 and 221 say to use "Singer motor lubricant" on the gears and many others as well. I know the early 1900s domestic machines such as the 66s, 99s, 27s (and related) didn't have gears, so would only have used oil. If it had a motor then would use Singer motor lubricant in the grease tubes.
Janey - Neat people never make the exciting discoveries I do.