- Cars
SAE 40
Monograde oil for diesel engines under severe service conditions
Diesel engine oil, API CF performance level
Older API category for indirect-injection diesel engines, tolerant of higher-sulphur fuel.
Petrol engine oil, API SJ performance level
API's service category for spark-ignition engines. Current category.
MIL-L-2104D — military engine oil
US military engine oil specification for combat vehicles, diesel and petrol; its level was taken over by the API categories.
MIL-L-46152C — military engine oil
US military engine oil specification for tactical vehicles, monograde and multigrade.
| Property | Typical value | Method |
|---|---|---|
| Density at 15°Ckg/m³ | 893 | ASTM D 4052 |
| Viscosity at 100°Cmm²/s | 14.5 | ASTM D 445 |
| Viscosity at 40°Cmm²/s | 148 | ASTM D 445 |
| Viscosity index | 96 | ASTM D 2270 |
| Flash point COC°C | 230 | ASTM D 92 |
| Pour point°C | -30 | ASTM D 5950 |
| B.N.mg KOH/g | 9.8 | ASTM D 2896 |

Eni i-Sigma monograde SAE 40 is a lubricant for naturally aspirated and supercharged diesel engines operating under severe service conditions or subject to excessive deposits and/or wear due to the design characteristics or the fuel used.
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