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Old 20 May 2017, 05:38 AM   #1
kilyung
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Oil expiration

I realize that oils used in servicing movements eventually lose their effectiveness. I've been regularly using D-5, 9010, and 9415 that I bought 7 years ago. They've been kept sealed, cool, and in low humidity the entire time. Also have been playing with 8141, 8217, 9020, and KT-22 bought around the same time. All my oils were rated for 3 or 6 yrs at the time of purchase.

I haven't noticed any performance issues from using these "old" oils but then again I tear down and service the affected movements at least annually (to stay in practice). So I haven't seen any long term effects of oil degradation. Is it time to buy new oils or do you think I can just keep plugging along for now? Anyone else have experience with "expired" oils?
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Old 20 May 2017, 06:23 AM   #2
SearChart
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We have many expired oils at school, don't think it's an issue if you do not notice anything strange going with the viscosity.
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Rolex uses rare elves to polish the platinum. They have a union deal and make like $90 per hour and get time and half on weekends.
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Old 20 May 2017, 08:50 AM   #3
kilyung
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Thanks Bas! Out of curiosity what are the recommended oils for Rolex movements these days? And do you treat with Epilame/Fixodrop before reassembly/oiling?
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Old 20 May 2017, 03:22 PM   #4
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When I was there I used: TEPA for the barrel wall, MR4 as grease (similar to D5), HP1000 for most of the geartrain, 9010 for balance and escape wheel. RL2 on the pallets.

I used fixodrop on the pallet fork, reversers and escape wheel.

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Rolex uses rare elves to polish the platinum. They have a union deal and make like $90 per hour and get time and half on weekends.
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