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PSI (Pakistan Standards Institute) Specifications (343.1981)

PSI Specifications (343.1981) Pakistan Standards Institute

Lubricating Oil for Internal Combustion Engines

 

PSI Specifications (343.1981) Pakistan Standards Institute

 

S.N

Characteristics of the products

 

Method Followed by PSI

 

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

177.0

201.0

201.0

201.0

201.0

201.0

177.0

201.0

201.0

2 a

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.

 

0.0

0.0

9.3

12.5

16.3

21.9

12.5

16.3

21.9

3 a

Kinematic Viscosity

Min.

ASTM D-445

1300.0

2600.0

0.0

0.0

0.0

0.0

1,300*

2,600*

2,600*

3 b

Kinematic Viscosity at 18o C, cST

Max.

 

2600.0

10,500

0.0

0.0

0.0

0.0

2,600.0

10,500.0

10,500.0

4

Pour Point oC

Max.

ASTM D-97

-21.0

-21.0

-6.0

-6.0

-6.0

-6.0

-9.0

-9.0

-9.0

5

Viscosity Index

Min.

ASTM D-2270

90.0

90.0

85.0

85.0

85.0

85.0

120.0

120.0

120.0

6

Copper Strip Corrosion, 3 Hours at 100oC

Max.

ASTM D-130

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

7

Performance test**

 

 

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



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