211.0 SAE viscosity grades of engine/gear oils

Engine oil – SAE J300, revised April 2013 (only an extract, original standard available at http://standards.sae.org)

SAE- viscosity classes	Low-Temperature (°C) Cranking Viscosity (ASTM D 5293) (mPa s) max.	Low-Temperature (°C) Pumping Viscosity(ASTM D 4684) (mPa s) With no yield stress max.	Low-Shear-Rate Kinematic Viscosity (ASTM D 445) (mm2/s) At 100 °C		High-Shear-Rate Viscosity (ASTM D 4683, CEC L-36-A-90 (ASTM D 4741), ASTM D 5481) (mPa s) s For 150 °C and 106s-1 min.
			min.	max.
0W	6200 at – 35	60,000 at – 40	3.8	–	–
5W	6600 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 – 25	5.6	–	–
20W	9500 at – 15	60,000 at – 20	5.6	–	–
25W	13,000 at – 10	60,000 at – 15	9.3	–	–
16	–	–	6.1	< 8.2	2.3
20	–	–	6.9	<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)
50	–	–	16.3	<21.9	3.7
60	–	–	21.9	<26.1	3.7

Gear oils - SAE J 306, 2005 extract

Automotive Gear Lubricant Viscosity Classification
SAE Viscosity Grade	Max. Temperature for Viscosity of 150,000 cP (°C)1.)	Kinematic viscosity at 100 °C (cSt) Using ASTM D 445
		min.	max.
	ASTM D 2983	ASTM D 4452.)	ASTM D 445
70W	− 553.)	4.1	−
75W	− 40	4.1	−
80W	−26	7.0	−
85W	−12	11.0	−
80	−	7.0	<11.0
85	−	11.0	<13.5
90	−	13.5	< 18.5
110	−	18.5	<24.0
140	−	24.0	< 32.5
190	−	32.5	<41.0
250	−	41.0	−

1. Using ASTM D 2983, additional low-temperature viscosity requirements may be appropriate for fluids intended for use in light-duty synchronized manual transmission
   
2. Limit must also be met after testing in CEC l-45-T-93, Method C (20 hours)
   
3. The precision of ASTM D 2983 has not been established for determinations made at temperatures below − 40 °C. This fact should be taken into consideration in any producer-consumer relationship.