Table 3: Physicochemical properties of the lubricants.

Sl. numberCharacteristicsLubricant name

Density at 15°C (g cm−3)0.87110.89100.86950.86550.8526
Kinematic viscosity (mm2/s) @ 40°C123.06166.71154.9383.6879.82
Kinematic viscosity (mm2/s) @ 100°C14.1717.7517.9313.2813.05
Viscosity index (VI)115117118162166
TAN (mg KOH/g)0.441.930.932.132.00
TBN (mg KOH/g)11.1611.099.6514.4114.25
Sulphated ash %wt1.060.770.930.801.10