Table 4.

Nominal test oil properties.

Parameter	Units	Value
Kinematic viscosity at 40 °C	[cSt]	27.3
Kinematic viscosity at 100 °C	[cSt]	5.9
VI	[-]	174
Density at 20 °C	[kg$·$m${}^{-3}$]	839
Thermal conductivity at 20 °C	[W$·$m${}^{-1}$K${}^{-1}$]	0.16
Boundary COF	[-]	0.13

Abbreviation: VI, viscosity index; COF, coefficient of friction.