IP-121 – Determination of Oil Separation on Storage of Grease – Pressure Filtration Method
During storage, oil may separate from lubricating grease, potentially lessening the effectiveness of the grease. The separation may be greater in greases stored in drums due to the pressure exerted on the lower levels of grease from the upper levels. This test predicts oil separation under storage conditions. It is not intended for in-service greases.
Using a custom apparatus, the sample grease is weighed into a wire mesh cone. This is placed into a cup to catch oil that separates. A metal weight is placed on the grease and the apparatus is heated for the test time (42 hours or 168 hours) at the test temperature (40°C). The percent of oil that separates from the grease is reported.
Sample size: 100 g
- AAR M-914 ¶ 2.4.1 – Oil Separation
- API RP 5A3-E – Oil Separation Nickel Cone, Annex E
- ASTM D1742 – Oil Separation, Storage, of Greases @ 24 hours
- ASTM D1742 – Oil Separation, Storage, of Greases @ 48 hours
- ASTM D1742 – Oil Separation, Storage, of Greases @ 96 hours
- ASTM D6184 – Oil Separation, Wire Cone Method
- DIN 51817 – Oil Separation @ 168 hrs.
- DIN 51817 – Oil Separation @ 18 hrs.
- FTM 321 – Oil Separation, Wire Cone Method (FED-STD-791 Method 321.2)
- GM 9030-P – Oil Separation, General Motors Specification
- IEC 811-5-1 – Oil Separation
- PLTL-44 – Evaporation Bleed MIL-S-8660 SAE-AS 8660 FTM 321
- PLTL-84 – Oil Separation, Pressure Cylinder US Steel Method
- PLTL-182 – Oil Separation of Bulk Greases, 12 day test – per temp.