ASTM D2532 - Viscosity and Viscosity Change After Standing at Low Temperature of Aircraft Turbine Lubricants

Significance and Use

5.1 Aircraft turbine lubricants, upon standing at low temperatures for prolonged periods of time, may show an increase in kinematic viscosity. This increase may cause lubrication problems in aircraft engines. Thus, this test method is used to ensure that the kinematic viscosity does not exceed the maximum kinematic viscosity in certain specifications for aircraft turbine lubricants.

Scope

1.1 This test method covers the determination of the kinematic viscosity of aircraft turbine lubricants at low temperature, and the percent change of viscosity after a 3 h and a 72 h standing period at low temperature.

Extracted, with permission, from ASTM D2532-14 - Viscosity and Viscosity Change After Standing at Low Temperature of Aircraft Turbine Lubricants, 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