Originally Posted by
quiltedsunshine
As a sewing machine tech, I tell people, "If you sew every day, you should get your machine serviced every year. But don't go more than 4 years without a service." The old oil is soooo hard to get off, if you let it sit for 10 years. It can freeze-up the machine.
The tech at the dealer here tells everyone that machine oil is made to evaporate so it won't gum up the works.