Hi Chaplin,
Got home yesterday and just now had a chance to check my Omega Book. There are tech sheets covering many Omega calibers up to and through the 400s but skips from there to the cal 750 then covers the 800s and up. Go figure, zero sheets covering the 600s!! Probably not important though if you are only interested in knowing which oils to use. The 610 is really no different than most other 28mm movements that size when it comes to oiling. As you know there are many oils to choose from and not knowing which oils you have on hand makes it a little difficult to recommend which oils to use as many of the new high pressure oils that have found their way to the watchmakers bench have in many cases replaced the oils originally recommended for your 610. My guess though is that back then Omega originally recommended oils comparable to D5 or possibly something a bit thinner for barrel pivots, Mobius 920 for gears up to the escape wheel, 910 for escape wheel and balance pivots with thinner oils for escape wheel teeth and pallet jewels. If you have epilame then definitely go with that for your escape wheel teeth. This is just a synopsis for you to use for comparison to what you may have on hand.
Bob
