What Is Varnish, Really? Understanding and Solving the Varnish Problem in Lubricated Systems | w/ Elaine Heley Varnish: it’s the hot topic in lubrication reliability—and no, we're not just talking about sticky residue in turbines anymore. In this deep-dive episode of Lubrication Experts, host Rafe Britton welcomes back renowned varnish specialist Elaine Heley, now an independent consultant, for a comprehensive look at what varnish really is, how it forms, how it differs across systems, and—most importantly—how to properly diagnose and remove it. Elaine draws from her years leading varnish diagnostics at Polaris and shares insights from the field, including: The difference between MPC testing and micro patch analysis Why “varnish” is a misleading catch-all term for multiple deposit types How environment, fluid formulation, contaminants, and machine design influence varnish formation A remarkable case study where over 680 lbs of varnish and carbon deposits were removed from a single ...