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1. Acidity The acids are present in oil in the form of: Organic acids Inorganic acid Due to additives in new oil 2. Alkalinity: The alcaline is added and in the new oil to neutralize the products produced by the oxidation of the oil when used. 3. Acid and alkali index: Acid index (AN, TAN): […]

What is the flash point: It is the temperature at which the amount of steam released from the surface of the lubricant sample will ignite when a flame is introduced. The lowest temperature at which steam from a lubricant sample continues to burn for 5 seconds is called the ignition point. Evaluation of lubricant composition […]