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Dear People

First of all, you should clear the temperature value for viscosity.

When you say 10 Cts, are you refering to 40 °C?, or are you refering to 100°C???

If you are talking about motor oil, it is very probable that the complete referece should be 10 Cts to 100°C, but if it is motor oil, you should indicate the viscosity in SAE Grade.

Maybe you would like to say SAE 10, or may be it is a monograde SAE 25W (equivalent to 10 Cts to 100 °C).

Please, see the table in

http://www.machinerylubrication.com/Backup/200005/read_oil_can_tab2.gif

Regards,
quote:
Originally posted by bruce381:
...it is to thick for insultating oil...

ASTM D 3487, Standard Specification for Mineral Insulating Oil pretty much govern in this industry field, and its tables list viscosity for both Type 1 and Type 2 oils at max. 12 cSt @ 40 degrees C. However, Group 3 oil might not be the best solution for transformers if its VI is more than 80, which I think it is. And also, the solvency might be deficient as well (too high Aniline Point).
Thank you for all your answer. Base on the above reply from all of you. The conclusions is as follows :-
Usage of Group III 10 cSt (100C)
- Motor Oil 15W/40
- HDEO (higher grade)
- Insulating oil
- Tranformer Oil (not a good choice)
- Industrail oil (to expensive)

Any nichie product that can be product with Group III 10 cSt ?
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