Five Types of Oil for a Tudor Service?

Adam2941 · Jan 19, 2025

Recently I took my wife’s Tudor, powered by an ETA cal. 2671, made in 2017, in for a regular service. The watchmaker informed me that these are complicated because Tudors require five different kinds of oil for the various parts. Does this make sense to anyone? When I got home I thought that sounded strange since it is only a Tudor in name. There is an ETA under the hood.

JimInOz · Jan 19, 2025

According to the ETA tech guide, you can get by with four.
8200
9010
9415
9501
These can have equivalent options, so maybe your watchmaker chooses to use one or more of the options for specific applications.

Five Types of Oil for a Tudor Service?

Adam2941

JimInOz

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