I'm assuming that the mineral oil used on hair clippers is about/if not the same as the sewing machine oil being discussed. It's what I've used on my TT, VCR, idler and other shafts without issue.
I never tried 3in1 as I noticed that when it was used on door hinges and locks that it acted as a magnet for dust, dirt, etc. Never saw a build-up of gunk with my clippers using the supplied mineral oil and the same for the other places I've used it. Granted, the places I've used the clipper oil is much more protected from the elements unlike door hinges.
I never tried 3in1 as I noticed that when it was used on door hinges and locks that it acted as a magnet for dust, dirt, etc. Never saw a build-up of gunk with my clippers using the supplied mineral oil and the same for the other places I've used it. Granted, the places I've used the clipper oil is much more protected from the elements unlike door hinges.