Engine Oils
Background & Properties
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SAE Engine Oil Viscosity Grades
Low-Temperature Viscosity High-Temperature Viscosity
SAE
Cranking (cP)
max. at °C
Pumping (cP)
max. with no
yield stress at
°C
Low Shear Rate
Kinematic (cSt)
min.
max.
at
100°C
max.
High Shear Rate
(cP)
at 150°C
min.
0W 6200 at -35 60,000 at -40 3.8 ---- ----
5W 6200 at -30 60,000 at -35 3.8 ---- ----
10W 7000 at -25 60,000 at -30 4.1 ---- ----
15W 7000 at -20 60,000 at -35 5.6 ---- ----
20W 9500 at -15 60,000 at -20 5.6 ---- ----
25W 13,000 at -10 60,000 at -15 9.3 ---- ----
20 ---- ---- 5.6 <9.3 2.6
30 ---- ---- 9.3 <12.5 2.9
40 ---- ---- 12.5 <16.3
2.9
(0W-40, 5W-40,
10W-40)
40 ---- ---- 12.5 <16.3
3.7
(15W-40, 20W-40,
25W-40, 40
grades)
50 ---- ---- 16.3 <21.9 3.7
60 ---- ---- 21.9 <26.1 3.7
*
All values are critical specifications as defined by ASTM D 3244 b ASTM D 5293 c ASTM D 4684 e presence of any yield stress detectable by this method
constitutes a failure regardless of viscosity. d ASTM D 455 e STM D 4683, ASTM D 4741, CEC-L-36-A-90 or ASTM D 5481 See SAE J300 for full formulation.
Physical Requirements
e following chart contains the physical requirements for SAE viscosity grades as described in SAE J300*.
Additional requirements are imposed by the U.S. military.
A15
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