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ASTM D6186 - Oxidation Induction Time of Lubricating Oils by Pressure Differential Scanning Calorimetry (PDSC)

Significance and Use  

4.1 Oxidation induction time, as determined under the conditions of this test method, may be used as an indication of oxidation stability.2 This test method is faster than other oil oxidation tests and requires a very small amount of sample. It may be used for research and development, quality control, and specification purposes. However, no correlation has been established between the results of this test method and service performance.

1. Scope

1.1 This test method covers the determination of oxidation induction time of lubricating oils subjected to oxygen at 3.5 MPa (500 psig) and temperatures between 130 °C and 210 °C.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.2.1 Exception—Pressure measurement appears in MPa with psig provided in parentheses for information only.

Extracted, with permission, from ASTM D6186-19 - Oxidation Induction Time of Lubricating Oils by Pressure Differential Scanning Calorimetry (PDSC), copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be purchased from ASTM International, astm.org