MIL-PRF-46167D
3.3 Operating requirements. The engine lubricating oil shall meet all the finished oil and
operating requirements as specified in 3.3.1 through 3.3.9.2.
3.3.1 Finished oil properties. The engine lubricating oil properties, after the application
of tolerances (see 4.1.1.1), shall not exceed the maximum (max.) or fall below the minimum
(min.) limits as specified in table I.
TABLE I. Finished oil properties.
Property
Arctic
Kinematic viscosity, Centistokes (cSt):
@ 100 degrees Celsius (°C), min.
9.3
@ 40°C
X 1/
@ -40°C, max.
18 000
@ -48°C, max.
55 000
High-temperature/high shear viscosity, Centipoise (cP),
2.9
min.
Low Temperature Cranking Viscosity, cP, max. @ -35°C
6200
Low Temperature Pumping Viscosity, @ -40°C, cP,
max.(no yield stress)
60 000
Viscosity index
X
Pour point, °C, max.
-55
Stable pour point, °C, max. 2/
-55
Flash point, °C, min.
220
Evaporative loss, percent (%), max. 3/
18
Other properties:
Gravity
X
Carbon residue
X
Sulfur
X
Sulfated ash
X
Total acid number (TAN)
X
Total base number (TBN)
X
Phosphorus
X
Nitrogen
X
Metallic components
X
Chlorine
X
Color
X
Boiling range
X
1/ Limits for the values marked by "X" can not be established, as different additive technologies and base
stocks will give different results. However, knowledge of these values is needed to judge performance
considerations and to ascertain the potential effects of changes in oil formulations.
2/ After being cooled down to its pour point, the oil shall regain its homogeneity on standing at a
temperature not more than 6oC above the pour point. However, it should not exceed the indicated
limits.
3/ The indicated limits apply when ASTM D5800 is used.
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