ASTM D1742 - Oil Separation - Clark Testing

ASTM D1742 - Oil Separation



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‚ÄČlb pails of grease during storage.

5.3 This test method is not intended to predict oil separation tendencies of the grease under dynamic conditions.

1. Scope

1.1 This test method covers the determination of the tendency of a lubricating grease to separate oil during storage in both normally filled and partially filled containers.

1.2 This test method is not suitable for greases softer than NLGI No. 1 grade.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 7.1.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Extracted, with permission, from ASTM D1742 - 18 Standard Test Method for Oil Separation from Lubricating Grease During Storage, 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

Ask an Expert

Question about our testing services? Please click below to submit your question to our staff and someone will be in contact with you shortly

Submit Question

Request a Quote

Clark Testing has been providing product qualification testing and design verification for manufactures for over 20 years. We provide our clients with independent testing.

Request A Quote


Testing Video


Related Services


Environmental Aging / Life Cycle


Seisimic Testing


EMC / EMI


Laboratory Services




Click here to view
A2La 17025 Certification

Have a question or would like to request a quote? Call 888.325.8517 or Request a Quote