The new approach to varnish testing

 Today, Chevron has teamed up with Polaris Laboratories, one of our independent LubeWatch® Oil Analysis Program partners, to develop a testing method that goes beyond the MPC and ASTM standard. The main objective is to give lubrication and maintenance engineers deeper insight into the root causes of varnish. This test relies not only on the color analysis of the patch, but also on changes to the weight of the patch, and how the accumulated substances respond to a polar solvent. For lab analysts, this can help distinguish between organic varnish precursors and insoluble hard particles, or inorganic compounds that may or may not add to varnish. This will help provide more detailed information about the types of varnish that may be present in your system, giving greater confidence in the test results and thereby to make a better-informed decision on remediation measures.https://me.caltexlubricants.com/content/chevron-lubricants/en_me/home/learning/from-chevron/industrial-machinery/The-new-approach-to-varnish-testing.html