Mine doesn't look like it needs much cleaning. I just tried wiping a little area with OrangeGlo cleaner. The cloth was very black - dirt or finish? I am going to leave it alone until the light is better.
Have you seen Billy's tutorials on cleaning vintage machines? Looks scary, but doable. I mean how many parts can it have?
I cleaned the bentwood case with OrangeGlo - now I have some Olde English for it. I decided on the dark. I hope it's the right choice.
Word to the wise - when I picked the machine up by the top, the wooden base fell apart. I was able to reglue it and add some shims, but it wasn't fun working with one hand while I held the little heavyweight out of the way.
My handwheel is solid and, no, I have no desire to convert her to a handcrank as long as I live in an area with electricity. Miss Mamie can be electric.