SJ 20W-50 is a gasoline engine oil for passenger cars in the SAE 20W-50 viscosity grade, formulated to API SJ. API lists SJ as a current category for gasoline automotive engines of model year 2001 and older.
Some details are shown in the site’s default language because this product has not been translated yet.
Grades & published data
Typical values from the product data sheet, each with its test method.
| Property | Value | Method |
|---|---|---|
| Kinematic viscosity at 40 °CcSt | 175 | ASTM D445 |
| Kinematic viscosity at 100 °CcSt | 20.5 | ASTM D445 |
| Viscosity index | 132 | ASTM D2270 |
| Cold-cranking viscosity (CCS)at -15 °CcP | 8520 | ASTM D5293 |
| Total base number (TBN)mg KOH/g | 6.9 | ASTM D2896 |
| Pour point°C | -24 | ASTM D97 |
| Flash point (open cup)°C | 238 | ASTM D92 |
| Copper strip corrosionat 100 °C | 1a | ASTM D130 |
| Foaming, Sequence I (24 °C)ml/ml | 5/0 | ASTM D892 |
| Foaming, Sequence II (93.5 °C)ml/ml | 10/0 | ASTM D892 |
| Foaming, Sequence III (24 °C after 93.5 °C)ml/ml | 5/0 | ASTM D892 |
| Kinematic viscosity at 100 °C after shear (30 cycles)After shear, 30 cycles (ASTM D6278)cSt | 18.9 | ASTM D445 |
| Noack volatility%wt | 5.1 | ASTM D5800 |
| Specific gravity | 0.881 | ASTM D4052 |
| Viscosity loss after shear% | 10.7 | ASTM D6278 |
Overview
SJ 20W-50 is a gasoline engine oil for passenger cars in the SAE 20W-50 viscosity grade, formulated to API SJ. API lists SJ as a current category for gasoline automotive engines of model year 2001 and older.
The specification table publishes typical values with their ASTM methods — kinematic viscosity, cold-cranking viscosity, Noack volatility, base number, shear stability, foaming tendency and copper corrosion — so the oil can be checked against the vehicle handbook before purchase.
Application
Vehicles whose handbook calls for API SJ — per API, gasoline engines of model year 2001 and older — or an earlier API gasoline category.
Application
The 20W winter rating is tested at -15 °C under SAE J300; use this grade where the handbook's viscosity chart allows 20W-50 for local temperatures.
Feature
Kinematic viscosity at 100 °C is 20.5 cSt, within the SAE J300 band for grade 50 (16.3 to below 21.9 cSt). Cold-cranking viscosity is 8,520 cP at -15 °C, under the 9,500 cP maximum that SAE J300 sets for 20W.
Feature
A viscosity index of 132 (ASTM D2270), Noack evaporation loss of 5.1 %wt (ASTM D5800) and a pour point of -24 °C (ASTM D97) are published as typical values.
Feature
The total base number (TBN, ASTM D2896) of 6.9 mg KOH/g is the oil's alkaline reserve for neutralising acidic combustion by-products between drains.
API describes SJ as suitable for gasoline engines of model year 2001 and older. Check the API category and SAE grade printed in your vehicle handbook; newer engines usually require a later category.
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.
