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Hi Number, 2 greases (NLGI 2) are the same from consistency and penetration point of view. you should follow the OEM recommendations for the type and NLGI grease needed for specific components and applications.

In our first study on this issue of diluted vs. undiluted particle counts, we actually produced the filter patches and showed microscopic images of those to validate that the diluted counts were more consistent with the microscopic counts (counts done on particle patches using field counts). To us this question is already "asked and answered", however it would have been good to show patches for the data we were presenting. My colleague had not produced them, because we were primarily working to answer the question "are all solvents listed in ASTM D7647 equal for their ability to remove the affects of water and soft particles", which I believe we have now answered (the answer is "No!").

Thank you so much 😀