Honestly, maybe clock oil is supposedly 'best' but I have always used mineral oil with NO problems. But, pentaxpete, maybe you should have first flushed out the dirt with lighter fluid and then, when nice and clean and dry, applied the tiny bit of oil. - David Lyga
Is this why so many cameras smell like Ronsonol, and still don't work?
C'mon, the OP is trying to find out the correct way to do it- not the "good enough" way.