teflon is somewhat new... when did teflon pans come out?
I use it extensively on my pins, have not had an issue.
It will not short, or block a signal.
used sparingly, it leaves a fine coat behind, which reduces friction.
And yes, it is a vast improvement to ...what was that stuff??? whale tallow?
what ever it was, it got hard as dry glue with age.
don't worry about it, just use it! great stuff.

Ok, I have an extra 2 cents, so...
if you have a sluggish/sticking step unit, remove the wiper from the shaft, and place it on a flat surface.
the wiper fingers shud all touch with little or no pressure applied.
sometimes, the short wipers get too much bend in them, and will bind.
if you see this on your step unit, bend the blades at the hub a little, till they all press down about the same.
you do not have to worry so much about the long wipers, they usually have enuf spring in them, to work without dragging.
but the short blades, catch on everything if they are too tight.
just a thot...

when new, yup, no lube needed...40 years later...well...