SAE Viscosity of Automotive Gear Oils – SAE J306 Jan 2005
| Automotive Lubricant Viscosity Grades Gear Oils - Except SAE J 306, 1998 | |||
| SAE Viscosity Grade |
Maximum Temperature for a viscosity of 150,000 cP (°C |
Minimum Viscosity at (cSt) a 100°C |
Maximum Viscosity at (cSt) a 100°C |
| ASTM D 2983 | ASTM D 445 | ASTM D 445 | |
| 70W | -55 | 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 | -- |
- Using ASTM D 2983, additional low temperature viscosity requirements may be appropriate for fluids intended for use in light-duty synchronized manual transmission.
- Limit must also be met after testing in CEC l-45-T-93, Method C (20 hours)
- 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