Originally Posted by susanwilley
I clean and oil my machine but I just don't know what this is.
Susan, don't know what to tell you. Some machines you DON'T oil. The new ones are self-oiling and are only meant to be oiled once a year at the most when they are cleaned by a professional. Too much oil can attract all manner of lint and dust etc. I would suggest you take it to the dealer or a cleaner in your area that cleans machines. Have them clean, check the bobbin , timing etc. I would put it in the hand of the pros...especially if it is a newer machine. Good luck.