SJ Grade is a multigrade gasoline engine oil based on mineral base oil and additives; its grades carry a dual API SJ/CF designation. Available grades: SJ/CF 10W40, SJ/CF 20W50. API lists SJ as a current category for gasoline automotive engines of model year 2001 and older.
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Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | SJ/CF 10W40 | SJ/CF 20W50 | Method |
|---|---|---|---|
| Kinematic viscosity at 100 °CcSt | 15 | 19 | ASTM D-445 |
| Viscosity index | 150 | 130 | ASTM D-2270 |
| Total base number (TBN)mg KOH/g | 8.5 | 8.5 | ASTM D-2896 |
| Pour point°C | -30 | -24 | ASTM D-97 |
| Flash point (open cup)°C | 220 | 226 | ASTM D-92 |
| Density at 15 °Ckg/m³ | 870 | 885 | ASTM D-4052 |
Overview
SJ Grade is a multigrade gasoline engine oil based on mineral base oil and additives; its grades carry a dual API SJ/CF designation. Available grades: SJ/CF 10W40, SJ/CF 20W50. API lists SJ as a current category for gasoline automotive engines of model year 2001 and older.
Each grade is listed separately in the specification table with its viscosity at 100 °C, viscosity index, flash point, pour point, density and base number, so grades can be compared directly before ordering.
Application
Vehicles whose handbook calls for API SJ — per API, gasoline engines of model year 2001 and older.
Feature
SJ/CF 10W40: KV100 15 cSt, VI 150, TBN 8.5, pour point -30 °C; SJ/CF 20W50: KV100 19 cSt, VI 130, TBN 8.5, pour point -24 °C.
Feature
2 grades in one product line, so a fleet can standardise on one API level across different climates or engine requirements.
Follow the SAE grade in your vehicle handbook. Under SAE J300 a lower W number is rated for colder starts (0W at −35 °C, 5W at −30 °C, 10W at −25 °C, 20W at −15 °C); the second number is the viscosity class at operating temperature.
Next step
The range above is what we publish. Formulation to a customer brief is a route of its own, and a sample is the first stage of it.
