I've never owned a Bernina, and after reading your posts, probably never will, I think that is really crappy on their part to not honor the anniversary complimentary servicing due to your circumstances. Bless you, I too am a caregiver and can relate. In answer to your question though, I think on any kind of machine, as long as you clean and oil regularly, it should be fine. I even oil my "no oil" machine, just a drop on the bobbin casing, and it sure makes a difference, runs much better, smoother, and quieter!