About SwRI: Foaming evaluation procedure is an API CJ-4-approved test used to evaluate foaming-related problems in lubricant oils that can lead to mechanical failure such as inadequate lubrication, cavitation, and overflow loss of lubricant.

For more information about the high-temperature, high-shear viscosity evaluation capabilities at Southwest Research Institute (SwRI) or how you can contract with SwRI, please contact Becky Grinfield at bgrinfield@swri.org or (210) 522-3652.


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Southwest Research Institute® (SwRI®) is an independent, nonprofit, applied engineering and physical sciences research and development organization with 12 technical divisions using multidisciplinary approaches to problem solving. The Institute occupies more than 1,200 acres and provides nearly two million square feet of laboratories, test facilities, workshops, and offices for more than 3,300 employees who perform contract work for industry and government clients.