| PSI Specifications (343.1981) Pakistan Standards Institute |
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| Lubricating Oil for Internal Combustion Engines |
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Characteristics of the products |
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Method Followed by PSI |
PSI Specifications (343.1981) Pakistan Standards Institute |
| S.N |
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SAE Grade |
SAE Grade |
SAE Grade |
SAE Grade |
SAE Grade |
SAE Grade |
Multi-Grade |
Multi-Grade |
Multi-Grade |
| 10W |
20W |
20 |
30 |
40 |
50 |
10W-30 |
20W-40 |
20W-50 |
| 1 |
Flash Point COC, Degree C |
Min. |
ASTM D-92 |
177 |
201 |
201 |
201 |
201 |
201 |
177 |
201 |
201 |
| 2:00 AM |
Kinematic Viscosity |
Min. |
ASTM D-445 |
4.1 |
5.6 |
5.6 |
9.3 |
12.5 |
16.3 |
9.3 |
12.5 |
16.3 |
| 2 b |
Kinematic Viscosity at 100o C, cST |
Max. |
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0 |
0 |
9.3 |
12.5 |
16.3 |
21.9 |
12.5 |
16.3 |
21.9 |
| 3:00 AM |
Kinematic Viscosity |
Min. |
ASTM D-445 |
1300 |
2600 |
0 |
0 |
0 |
0 |
1,300* |
2,600* |
2,600* |
| 3 b |
Kinematic Viscosity at 18o C, cST |
Max. |
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2600 |
10,500 |
0 |
0 |
0 |
0 |
2,600.00 |
10,500.00 |
10,500.00 |
| 4 |
Pour Point oC |
Max. |
ASTM D-97 |
-21 |
-21 |
-6 |
-6 |
-6 |
-6 |
-9 |
-9 |
-9 |
| 5 |
Viscosity Index |
Min. |
ASTM D-2270 |
90 |
90 |
85 |
85 |
85 |
85 |
120 |
120 |
120 |
| 6 |
Copper Strip Corrosion, 3 Hours at 100oC |
Max. |
ASTM D-130 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| 7 |
Performance test** |
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As applicable for individual Grade |
| * |
Applicable after incorporation of sufficient quantity of pour point depressant which could reduce its pour point to -21oC |
| ** |
Performance tests form part of specifications |
