Grant
Thanks for sharing.
It is amazing how clean you get the underside. Is it safe to use the metal cleaner products there also? I have been reluctant to use steel wool, wire brushes, polishes etc. on the underside of a machine. I generally stick to kerosene there and get of the gook, but it never looks like yours! Am I being overly cautious?
I have never been successful in using just oil on a sewing machine head. Will have to try it again.