I put a few drops of light gun oil on the hinged end of the blade and then work them open and closed - flushes out lots of old junk and leaves a little light lubrication for the pivot. I also use as q-tip with a little light oil and compressed air to clean out the insides of the knife. Wipe it down and keep using it.
One of the sanest, surest, and most generous joys of life comes from being happy over the good fortune of others. Archibald Rutledge