Big protection but not slippery, for certain trans and diff applications. Contains extreme pressure additives like our 75W140 GL-5 oil, but lacks friction modifiers to balance slipperiness Popular for historic and vintage transmissions, like Mid-1930s to early-1950s synchro-equipped gearboxes in cars and trucks Helps with noisy or rough shifting in troubled A-833 Dodge/Plymouth 4-speed transmissions from 1964 to 1969 Option for noisy transmissions when mixed with 75W90NS or MT-90 to bring viscosity level up Also used in clutch-type limited slip differentials in racing for maximum lock up-some users add Limited Slip Friction Modifier in small doses to customize slippage Non corrosive formula, safe for use with all synchro materials
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) | 75W140 |
| Vis @ 100°C, CSt | 26.9 |
| Vis @ 40°C, CSt | 162 |
| Viscosity Index | 200 |
| Pour Point, °C | -45 |
| Pour Point, °F | -49 |
| Brookfield Viscosity, Poise | 1200 @-40°C |