We always ran All in our SFs. Perhaps the only good thing Monsanto ever did for mankind (though not outweighing the bad).
Never had a motor problem. Did have to rebuild the spin sheave on the 3-belt, but if a 13yo can do it who can't? The sealed gearbox failed in the bootless SF, that was over my head at the time though I had already replaced the timer, unsupervised, around 10yo.
I'm an Asperger. Machines and I always understood each other. I could even make a Lawn Boy run, and if you've ever owned one you know how hard that can be.