Just to add to Crusty's post above. I had some
8mm film from the 30s and early 40s. I borrowed an 8mm projector from a friend down the street to run the film. It ran fine.
A few months later I took the film down south to a relatives place and ran the film again..on
Another projector. The "Tension" adjustment on the new projector was Wrong ..and the film was broken up into little Pieces...destroyed. OLD film can be very Brittle....and break........
NB