MTL® 75W80 GL-4 GEAR OIL Popular for BMW, Honda/Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Mitsubishi, Dodge & Jeep NV1500, NV3500, NV3550 and NV5600 truck transmissions Popular replacement for and improvement over GM Synchromesh® (#12345349), Auto-Trak II® (#12378508) and Chrysler spec MS-9224 Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage Offers quicker shifts, A perfect synchronizer coefficient of friction Eliminates notchy shifting, even when cold High performance gear protection and longer synchro life Satisfies the gear oil viscosity requirements of 75W, 80W and motor oil viscosities of SAE 30, 10W30 and 5W30 Recommended for GL-1, GL-3 and GL-4 applications as well as where most special synchromesh fluids are specified
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 |