I've heard that some of the old style machines like the Singer 15s for instance will use a lot of oil
The reason I'm asking is there is some controversy in our house regarding oiling of sewing machines.
I explained that if all you do is a rare occasion of mending sure you don't need to oil that often
But if you're sewing hard for hours at a time for days on end of course you'll need to oil your machine more often!
And I do understand just a drop because too much can throw off timing or seep where it shouldn't