Red Line 75W140 NS GL-5 Gear Oil
Quart Bottle - RL57104
A heavier product that works well over a wide range of loads and temperatures, This GL-5-type gear oil doesn't contain the friction modifiers for limited-slip hypoid differentials. This makes the transmission synchronizers come to equal speeds more quickly, allowing faster shifting and much easier low-temperature shifting. Can also be used in racing limited-slip differentials where weak spring design causes too much wheel spin.
- 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
- Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, and SAE J2360
API Service Class |
GL 5+ |
Viscosity Grade |
SAE 75W140 |
Vis @ 100°C, cSt |
26.9 |
Vis @ 40°C, cSt |
179 |
Viscosity Index |
188 |
Pour Point, °C |
-45 |
Pour Point, °F |
-49 |
Flash Point, °C |
216 |
Flash Point, °F |
420 |
Brookfield Viscosity, Poise |
1200 @ -40°C
|
- Fully-synthetic formulas created from polyol ester base stocks, offer excellent lubrication under extreme conditions
- High viscosity-index (VI) to provide relatively constant viscosity and film thickness with varying temperature change
- Ester base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears
- Superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils
- Exceed API GL-5 specifications
- Engineered to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear