The Breitling Watch Source Forums

I know there is a lot of discussion in the past about what people do regarding the servicing of their mechanical watches, including Breitlings. I know, from a technical point of view, they should be served every 5 years or so as the oil breaks down by that time regardless of useage. However, I suspect many owners do not have their watch(s) serviced every 5 years. I would be interested in what others do as I have a number of mechanical watches nearing that 5 year mark where technically they sould be serviced. Do most follow the 5 year rule or do you wait until there are signs that a service is needed?

For me it depends on the watch. For my more expensive ones I follow a 3 to 5 year schedule irrespective, but for less expensive ones running standard ETAs I tend to wait until something indicates a service is needed, or around 10 years, whichever is sooner.

How often should my watch be serviced?

Our main concern with most movements is that, when the synthetic oils dry up, the watch will continue to run. When running without lubrication, there is the probability of damage and wear to parts, resulting in the need for extensive (and more expensive) service. For older and out of production watches, usually our recommendation is for complete disassembly, clean, oil and adjustment of the movement to start. Subsequent service is completely individualized and depends on usage, type of watch and the environment. Rarely will we do any partial case or movement work unless we were the last to do a complete service. All timepieces are done individually, with the goal to bring the watch back to the best mechanical and aesthetic condition as possible.

The following was taken from an article by David Christianson, and is found in January 1997 American Watchmaker’s Institute’s Horological Times publication.

“Historically, animal oils and vegetable oils have been the mainstay of horological lubricants. They can be refined and formulated to have many of the ideal properties of the perfect horological oil. But they have one serious drawback as well, they become rancid and dry up. This may be a serious drawback to the watch owner, but it certainly has been beneficial to watch repairmen and, as we’ll see in a moment, it has been beneficial to the watch movement as well.

When the animal and vegetable oils begin to deteriorate, they tend to thicken as they dry out, and the movement stops, long before any wear can take place because the thickened and dried oils still maintain a protective (albeit dried) film between metal surfaces. This forced the owner to have his watch cleaned and re-oiled on a regular and frequent basis, and with this frequent service the movement continued to perform its function with very little wear over very long periods of time. It is not unusual at all to find watch movements 100 and 200 years old that show very little wear.

In search for oils that would not deteriorate in a short period of time, synthetic oils were developed that would provide many of the properties of the ideal watch oil. About a generation ago synthetics replace animal oils as the oils of choice.

Synthetic watch oils do retain their properties longer and watch movements run longer without wear than did movements oiled with animal oils. But synthetic watch oils have their serious downside as well. There is not the thickening and caking of the oil to stop the movement and force the owner to have his watch serviced before wear can take place. Synthetic watch oils, too, deteriorate but instead of thickening they tend to become more liquid, spread and evaporate over time, especially the synthetics of the recent past. The significant of this type of deterioration is that the movement will continue to run even as the synthetic oil deteriorates and evaporates (albeit less efficiently). This will continue until pivots score, often to the point of breaking and brass bearing holes wear ovoid, aggravated by dust, dirt and rust particles from leaking case gaskets and more significantly, leaking crown gaskets. Unless the owner is disciplined with a regular and frequent service schedule (and most of us aren’t), it is the worn out movement that forces the owner to seek the servicing of the watch with a resultant extensive and expensive repair bill. The jewelled bearings and highly polished pivots and other bearing surfaces will allow the watch to run without oil but with resultant wear.

The secret to a long lived watch movement is frequent cleaning and oiling, just as in the past, but now more discipline is needed. The watch itself can not tell us when it needs servicing before it begins to wear out as the animal oils of the past allowed us to do.”

By David Christianson as published in the American Watchmaker Institute's January 1997 Horological Times