Correlation Study of Physicochemical, Rheological, and Tribological Parameters of Engine Oils

Table 3

Physicochemical properties of the lubricants.

Sl. number	Characteristics	Lubricant name
			Density at 15°C (g cm^−3)	0.8711	0.8910	0.8695	0.8655	0.8526
	Kinematic viscosity (mm^2/s) @ 40°C	123.06	166.71	154.93	83.68	79.82
	Kinematic viscosity (mm^2/s) @ 100°C	14.17	17.75	17.93	13.28	13.05
	Viscosity index (VI)	115	117	118	162	166
	TAN (mg KOH/g)	0.44	1.93	0.93	2.13	2.00
	TBN (mg KOH/g)	11.16	11.09	9.65	14.41	14.25
	Sulphated ash %wt	1.06	0.77	0.93	0.80	1.10