| No. |
Technical Index |
Note |
| 1 |
Kinematic Viscosity (40℃) |
Unit: mm²/s; Measures oil fluidity, core basic indicator |
| 2 |
Kinematic Viscosity (100℃) |
Unit: mm²/s; Reflects oil fluidity and lubrication performance at high temperatures |
| 3 |
Viscosity Index (VI) |
Dimensionless; Measures the stability of oil viscosity with temperature, the higher the value, the better the stability |
| 4 |
Flash Point (Open Cup) |
Unit: ℃; Measures oil fire safety to prevent ignition at high temperatures |
| 5 |
Pour Point |
Unit: ℃; Measures oil low-temperature fluidity, determining applicability in low-temperature environments |
| 6 |
Density (20℃) |
Unit: kg/m³; The ratio of oil mass to volume, used for measurement and component analysis |
| 7 |
Water Content |
Unit: % (mass fraction); Control water content in oil to avoid corrosion of engine components |
| 8 |
Mechanical Impurities |
Unit: % (mass fraction); Control impurity content to prevent wear of engine cylinders and bearings |
| 9 |
Total Acid Number (TAN) |
Unit: mgKOH/g; Measures the content of acidic substances in oil, reflecting antioxidant degradation ability |
| 10 |
Total Base Number (TBN) |
Unit: mgKOH/g; Core index of gas engine oil, neutralizes acidic substances generated by gas combustion and extends oil change cycle |