I bought viscosity 100

 

I had an interest in doing this some time ago, and the thinking then was the lower the better. Still have a can of 10wt silicon oil knocking about the garage somewhere. Couldn't get over the fact that a hydro mod prevents the auto EL from working!

mmm... just realised the pack also has '100' on it, so obviously I don't understand the units of viscosity! LOL

 

As mentioned in several other threads, don't use a silicone-based oil in your watch. It is likely that the oil will react with luminous coatings if present, and there is some suspicion that it will cause gasket/cushioning material in the Rangeman to swell. Best to use some kind of Teflon-based oil or 3M Flourinert if you can source some. I have seen some Teflon-based shock oil for R/C cars but, even the ones with the lowest viscosity ratings are many times thicker than Flourinert - shouldn't be a problem, though, if you are hydro-modding a digital watch.

 

What is the viscosity of Flourinert and can it be used in automatic watch (and how 🙂)?
Thanks

 

What does this mod do?

 

something like this

The Little Watch That Could

 

Aborted purchasing order for the oil 🛢

 

If you're really interested in doing a hydro mod to an analog watch, I'd suggest starting with a cheapie. Here's a good read about someone's Hydro mod adventures.

I have filled an analogical Casio with oil: My Marlin...

A few years ago, I hydrolyzed (oil filled) a Casio F-91W. On that occasion, I did not have silicone oil, and I used olive oil (virgin, yes) ?. The watch worked (and works) perfectly (the bubble was not circular). I turned a Water-Resistant watch into one capable of going down to depths...

www.watchuseek.com

 

Directly from the pro. Sinn Uhren: HYDRO

 

Directly from the pro. Sinn Uhren: HYDRO
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I'd call Ressence the pros. They did it to an automatic. Given, the oil doesnt touch the movement, but still.