4. Summary of Test Method
4.1 The sample of grease, supported on a 75-µm (No. 200) sieve, is subjected to 1.72 kPa (0.25 psi) air pressure for 24 h at 25°C (77°F). Any oil seepage that occurs drains into a beaker and is weighed.
5. Significance and Use
5.1 When a lubricating grease separates oil, the remaining composition increases in consistency. This can affect the ability of the product to function as designed.
5.2 It has been found that the results of this test correlate directly with the oil separation that occurs in 35-lb pails of grease during storage.
5.3 This test method is not intended to predict oil separation tendencies of the grease under dynamic conditions.
