Oil for the sewing machines
What lubricant to use to silence squeaking door hinges : Oil For The Sewing Machines
Quote from Article entitled What lubricant to use to silence squeaking door hinges:
But still what lubricant to use for its optimal work? Basically, for locks and door hinges the same lubricants are often used. So, dry lubrication of powdered graphite, which is poured into the disassembled lock or right in the keyhole is generally used for lubrication of lever locks.
The full version of the article can be found here.