The go-to gear oil for most differentials. Most popular Red Line gear oil, with thousands of applications for passenger cars, light trucks and racing vehicles Contains additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required This product is not designed for use in most manual transmissions or transaxles in passenger vehicles, since the extreme slipperiness may cause synchronizer mesh issues that lead to shifting problems Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, SAE J2360 and Chrysler spec MS-9763 Suitable replacement for a differential calling for an 80W90 or SAE 90 gear oil
These products contain the extreme pressure additives necessary for ultimate protection road cars and racing vehicles, as well as friction modifiers (except NS) for proper limited-slip operation
| API Service Class | GL 5+ |
| SAE Viscosity Grade (Gear Oil) | 75W90 |
| Vis @ 100°C, CSt | 16 |
| Vis @ 40°C, CSt | 112 |
| Viscosity Index | 155 |
| Pour Point, °C | -45 |
| Pour Point, °F | -49 |
| Brookfield Viscosity, Poise | 1100 @-40°C |