Viscosity index (VI)
A measure of change in viscosity of an oil as it changes temperature. The higher the viscosity index, the less the viscosity changes.
Aviation Maintenance Technician Handbook — Powerplant, p. G-30
A measure of change in viscosity of an oil as it changes temperature. The higher the viscosity index, the less the viscosity changes.
Aviation Maintenance Technician Handbook — Powerplant, p. G-30