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Full Synthetic 75W140NS GL-5 Manual Transmission Fluid - 946mL | RLO57104

Red Line Oil

Full Synthetic 75W140NS GL-5 Manual Transmission Fluid - 946mL | RLO57104

Part #RLO57104
$33.29

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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.
  • 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
  • Fully-synthetic formulas created from polyol ester base stocks, offer excellent lubrication under extreme conditions
  • Ester base stocks and friction modifiers (except NS) provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears
  • High viscosity-index (VI) to provide relatively constant viscosity and film thickness with varying temperature change
  • Superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils


Suitable replacement for:

  • API GL-5 & MT-1
  • MIL-PRF-2105E
  • SAE J2360
  • Historic & Vintage Synchro Transmissions
  • Rockwell 0-76-C
  • Used in SAE 140 Applications
BrandRed Line Oil
Product Dimensions 22.23 x 10.16 x 10.16 inches
Manufacturer Part Number57104

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