Some examples are SUS, cSt, cP, ISO, SAE engine, SAE gear and AGMA it’s enough to make a person’s head start to spin. That doesn’t sound too difficult, does it? Unfortunately, new temperature, speed and pressure demands on lubricating fluids have changed over the years, resulting in several different measurements and classifications being created to describe lubricant viscosity. Simply stated, viscosity is defined as the internal resistance of a fluid to flow. By John Sander, VP Technology, Lubrication Engineers Inc.
