Petronas Urania 800 20W-50 CF-4
Heavy-duty diesel oil for turbocharged and naturally aspirated engines, on and off-highway
SAE 20W-50
Mobil Delvac Super 20W-50 is a high performance diesel engine oil that provides proven protection for diesel engines operating in severe service applications. ExxonMobil recommends it for a wide range of heavy-duty applications and operating environments in trucking, construction and agricultural industries, extending engine life between overhauls in both high speed/high load and pickup/delivery duty cycles, for two-cycle and four-cycle diesel engines, mixed fleets and equipment from leading diesel engine manufacturers. Key benefits include enhanced protection for two- and four-cycle diesel engines in the most demanding on- and off-highway service, prolonged engine life, outstanding control of high-temperature deposits and excellent soot control. Its stay-in-grade shear stability and enhanced high-temperature/high-shear viscosity retention reduce engine scuffing and bore polishing, while improved low-temperature sludge control aids stop-and-go service and easy cold-weather starting. Extended TBN reserve supports long-term wear and deposit control, and reduced oil consumption comes from improved high-temperature performance. SAE 20W-50, Mobil Delvac Super 20W-50 is recommended for applications requiring API CF, API CF-4, API SF and API SG.
Diesel engine oil, API CF performance level
API's service category for indirect-injection diesel engines, tolerant of higher-sulphur fuel. An earlier category in the API service classification, written for the engines of its era; it still appears on datasheets alongside the current categories.Source
Diesel engine oil, API CF-4 performance level
API's service category for high-speed four-stroke diesel engines, of the generation preceding the emissions standards. An earlier category in the API service classification, written for the engines of its era; it still appears on datasheets alongside the current categories.Source
Petrol engine oil, API SF performance level
API's service category for spark-ignition engines, of around 1980. An earlier category in the API service classification, written for the engines of its era; it still appears on datasheets alongside the current categories.Source
Petrol engine oil, API SG performance level
API's service category for spark-ignition engines, of the late 1980s. An earlier category in the API service classification, written for the engines of its era; it still appears on datasheets alongside the current categories.Source
| Property | Typical value | Method |
|---|---|---|
| Density @ 15 Cg/cm3 | 0.87 | ASTM D4052 |
| Kinematic viscosity @ 40 Cmm2/s | 163 | ASTM D445 |
| Kinematic viscosity @ 100 Cmm2/s | 18.2 | ASTM D445 |
| Cold-Cranking Simulator, Apparent Viscosity @ -15 CmPa.s | 6494 | ASTM D5293 |
| Pour point°C | -30 | ASTM D97 |
| Total base numbermgKOH/g | 6.4 | ASTM D2896 |
| Ash, Sulfated, mass% | 0.72 | ASTM D874 |
| Flash point°C | 231 | ASTM D92 |
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