Since most GL-5 gear oils for differentials are too slippery for manual transmissions, Red Line offers these products that ensure proper shifting while providing ultimate wear protection
| API Service Class | GL-4 |
| SAE Viscosity Grade (Gear Oil) | 75W80 |
| Vis @ 40°C, CSt | 50.8 |
| Vis @ 100°C, CSt | 10.4 |
| SAE Viscosity Grade (Motor Oil) | 5W30 |
| Viscosity Index | 201 |
| Pour Point, °C | -50 |
| Pour Point, °F | -58 |
| Brookfield Viscosity @ -40°C, Poise | 120 |
TMI-RED-50204