Red Line 75W-90 GL-5 Gear Oil (1 Qt)
Red Line 75W-90 GL-5 Gear Oil (1 Qt)
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Red Line 75W-90 GL-5 Gear Oil (1 Qt)

Red Line
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Red Line

75W90 GL-5 Gear Oil - quart

Part Number: 57904

Red Line, RED-57904

Designed to provide the highest degree of protection and greatest efficiency for your drivetrain. Red Line provides a complete line of drivetrain lubricants which are optimized for differential, transmission, or transaxle use over a wide range of temperatures.


  • Provides the greatest gear protection available
  • Reduces differential and gearbox temperatures
  • Increases differential and gearbox durability
  • Rapid lubrication even in very cold weather
  • Improves shifting in manual transmissions
  • Provides improved drivetrain efficiency
  • Prevents foaming even at high speeds
  • Low corrosiveness reduces synchronizer wear
  • Stable even at elevated temperatures
  • Highest film strength available
  • Can be used in limited-slip and regular differentials
  • Suitable for competition and street use
  • Compatible with petroleum and other synthetics
  • Compatible with seals designed for petroleum
  • Satisfies requirements calling for API GL-5 and GL-6
  • Allows extended drains in non-warranty vehicles

Red Line 75W90 Gear Oil - the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5.

Red Line 75W90 NS - a GL-5 which does not 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.

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WARNING: Cancer and Reproductive Harm -