I only use it as a solvent, not an oil. I wipe it all off, along with the dried oil it dissolves and then use SM oil. I usually wait a couple of days and then oil again wiping up the excess SM oil or tri-flo.
I don't use it as an oil on SM, only on door hinges and such around the house!
So don't worry about me ruining a wonderful old machine, I love them too much.