High Temperature/High Shear Viscosity

High Temperature/High Shear (HT/HS) viscosity is measured at 150°C (302°F) under shear stress conditions similar to very thin film lubrication areas such as those found at the piston ring-to-cylinder wall interface. The value obtained from this test provides an indication of temporary shear stability of the viscosity index improver used in multigrade oils.

Document Number:0000009840