Articles

Precision Spotlight with Rafe Britton

Precision Spotlight with Rafe Britton

  Welcome to Precision Spotlight, our fresh Q&A series where we shine a light on industry professionals, delving into their insights and experiences in the world of lubrication. In this Precision Spotlight we interview one of our Editorial Advisory Board...

The Elusive Acid Number: What Does It Really Mean?

The Elusive Acid Number: What Does It Really Mean?

The Acid Number of a lubricant, sometimes called the "Total Acid Number" or TAN, is a commonly reported value for oil analysis and is generally considered an indication of oil aging and degradation. But what does it mean, and how is it determined? Let's break down...