Awesome, I am a cyclist too and have Tri Flow, which is an industrial banana oil. Very best for bike chains. Trivia: Banana oil can lubricate mated aluminum parts without binding. Have thick dowels and tack hammer, will persevere. Have used Goo Gone then singer oil on the exterior and it looks fine, no decals moving. Will re wire as well, has the oddest pedal I've seen. The thing I like best about it is all of Singer's international patents were in force and the Gritzner engineers had to figure out alternative builds for about everything on this.
Since I got all of your attentions, can the round belt be swapped for a toothed one? I see this elsewhere on this model but would have to change the wheel race and the motor pulley. Thanks again