A viscosity index improver is a complex polymer additive that expands at elevated temperatures to thicken the lubricant and ensure a more stable and consistent viscosity. This ensures the lubricant fully protects the equipment at both low and high temperatures.
Uses & Benefits:
Viscosity modifier helps a lubricant from becoming too “thin” at high temperatures. If a lubricant decreases in viscosity and becomes too thin, the protective properties are diminished which leads to equipment damage and wear.