Oh Dear !! I have been using Three-in-One to lubricate in the baseplate cogs of my 1960's-70's Asahi Pentaxes and my Canon FTbn and A1 but they all seem OK still and wind on very smoothly now . I just touch a piece of fuse wire into one drop of the Oil in a dish and then touch it into the cogs and by capillary action it goes in -- very SMALL amounts only.