I used some good quality machine oil NOT Bernina and got chewed out by my dealer. I was told to ONLY use Bernina oil. How they knew I'll never know..BUT this is also the same place that showed me how to thread my machine wrong and oil wrong among other things..and never called to tell to me or anything when THEY found out. This is a small town ~ I'm not thinking they have hundred's of customers they have sold a machine to. I have a sneaking suspicion also that there was something not quite right about my machine in the first place. Needless to say...I drive my machine 2 hours away to be serviced now instead of just in town. How sad is that??