API Engine Oil Classifications For Service Fill Oils - SAE Viscosity Grades For Engine Oils

SAE Viscosity Grades For Engine Oils⁽¹⁾⁽²⁾
SAE Viscosity Grade	Low Temperature (°C) Cranking Viscosity⁽³⁾, cP Max	Low Temperature (°C) Pumping Viscosity⁽⁴⁾, cP Max with No Yield Stress⁽⁴⁾	Low-Shear-Rate Kinematic Viscosity⁽⁵⁾(cSt) at 100°C Min	Low-Shear-Rate Kinematic Viscosity⁽⁵⁾(cSt) at 100°C Max	High-Shear-Rate Viscosity⁽⁶⁾ (cP) at 150°C Min
0W	6200 at -35	60000 at -40	3.8	-	-
5W	6600 at -30	60000 at -35	3.8	-	-
10W	7000 at -25	60000 at -30	4.1	-	-
15W	7000 at -20	60000 at -25	5.6	-	-
20W	9500 at -15	60000 at -20	5.6	-	-
25W	13000 at -10	60000 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 grades)
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
⁽¹⁾ *Notes-1cP = 1mPa^ s; 1 cSt = 1mm²/S** ⁽²⁾ All values are critical specifications as defined by ASTM D3244 (see text, Section 3). ⁽³⁾ ASTM D5293 ⁽⁴⁾ ASTM D4684: Note that the presence of any yield stress detectable by this method constitutes a failure regardless of viscosity. ⁽⁵⁾ ASTM D445 ⁽⁶⁾ ASTM D4683, CEC L-36-A-90 (ASTM D4741) or D5481 " Reprinted with persmission form SAE J300© 1999 Society of Automotive Engineers, Inc."