Full Synthetic 75W140NS GL-5 Gear Oil (16 gal) has Vis@100°C= 27.1 CSt, Vis@40°C= 168 CSt, Viscosity Index= 200, SAE Viscosity Grade= 75W140 (gear oil), ester base stocks, & no friction modifiers that balance slipperiness.

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Full Synthetic 75W140NS GL-5 Gear Oil contains extreme pressure additives like our 75W140 GL-5 oil, but lacks friction modifiers to balance slipperiness. It is popular for historic and vintage transmissions, like Mid-1930s to early-1950s synchro-equipped gearboxes in cars and trucks. It helps with noisy or rough shifting in troubled A-833 Dodge/Plymouth 4-speed transmissions from 1964 to 1969 and is a good option for noisy transmissions when mixed with 75W90NS or MT-90 to bring viscosity level up. It is 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. These Red Line GL-5 offer big protection but are not slippery, for certain trans and diff applications. These GL-5 products contain the extreme pressure additives necessary for ultimate protection road cars and racing vehicles, as well as friction modifiers for proper limited-slip operation. This product exceeds API GL-5 specifications and is engineered to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear.

• Full synthetic
• High viscosity-index
• Relatively constant viscosity & film thickness with varying temp change
• Ester base stocks
• Friction modifiers
• Superior shear stability
• Less oxidation
• Exceeds API GL-5 specs
• Longer drain intervals

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Information:

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; 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. Typical Properties: API Service Class = GL 5+; SAE Viscosity Grade (Gear Oil) = 75W140; Vis @ 100°C = 27.1 CSt; Vis @ 40°C = 168 CSt; Viscosity Index = 200; Pour Point = -45°C; Pour Point = -49°F; Brookfield Viscosity @ -40°C = 1200 Poise.