Table 2 The properties and specifications of SAE20W40 diesel based engine oil used in this experiment.

From: Enhanced tribological properties of diesel-based engine oil through synergistic MoS2-graphene nanohybrid additive

Property

Specification

Grade

SAE 20W-40

Pour Point, °C, ASTM D97

− 24

Flash Point, °C, ASTM D92

233

Density @ 15 °C, g/mL, ASTM D1298

0.879

Total base number, mgKOH/g, ASTM D2896

6

Kinematic Viscosity @ 100 °C, mm2/s, ASTM D445

12.72

Kinematic viscosity @ 40 °C, mm2/s, ASTM D445

113.76

Ash, sulfated, mass %, ASTM D874

0.08

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