What is the purpose of the dilution test in oil analysis?

The purpose of the dilution test in oil analysis is to determine how much oil is diluted, which is crucial for understanding its performance and suitability for operation. This test helps to identify the presence and concentration of contaminants or additives that may have been added to the oil, which could affect its performance characteristics. Knowing the dilution level can also assist in diagnosing potential issues such as contamination from fuel, solvents, or water, which can significantly influence the lubrication efficacy and longevity of the oil.

While measuring water content and evaluating lubrication quality are important in oil analysis, the dilution test specifically focuses on the extent of dilution, providing insights into the overall condition of the oil and its ability to function as intended. Assessing thermal stability might also be relevant but is not the primary aim of the dilution test. Thus, the emphasis lies on understanding how diluted the oil is, which is crucial for effective machinery maintenance and operation.