Gear oil TAN?

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Why industrial gear oil contains TAN? why TBN is not required?

12/17/1311:38 PM

Original Post

Scientifically speaking, the TBN is one of two "neutralization number" tests run on oils. The TAN (total acid number), which is used for hydraulic oils, is the other. The TBN measures how much base (as in, a base vs. an acid) additive is in the oil to offset the deleterious effects of acids coming into the oil from combustion and other sources.

1/2/141:32 AM

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