I learned something new today that I wish to share.
I was look at different you tube videos on oiling vintage sewing machines and came across BrianSews's video.
He recommends using Marvel Mystery Oil found at Walmart for sewing oil. He states that it was once made for use as sewing oil, but now sold in auto parts area. At 1 minute 8 seconds into the video is when he introduces this; here is the link:
http://www.youtube.com/watch?v=sf7DsEE02zM
Does anyone here use this stuff? Seems lots cheaper.