Red Line Oil 50106 Synthetic Gear Oil 75W90 GL-5

Red Line Synthetic Gear Oil delivers superior protection and maximum efficiency for demanding drivetrain applications. Formulated with advanced polyol ester base stocks, this premium lubricant provides exceptional performance under extreme loads and high temperatures while reducing sliding friction in hypoid gears to minimize wear and operating temperatures.

Key Features:

• Polyol ester base stocks for excellent lubrication under extreme conditions
• Natural multigrade properties provide stable viscosity over extended use
• Reduces sliding friction in hypoid gears to lower wear and temperatures
• Available in multiple viscosity grades for passenger, commercial, and racing applications
• Select formulations include friction modifiers for limited-slip differential compatibility
• Exceeds API GL-5 specifications for demanding gear protection

Available Viscosity Grades:

75W90: The most popular choice for nearly all car and light truck differentials, both conventional and limited-slip. Contains friction modifier recommended for limited-slip units. Ideal for most racing applications and can be used in many transmissions and transaxles. Exceeds API GL-5.

75W140: GL-5 rated product recommended for street-driven differentials where higher viscosity is specified. Excellent performance in both conventional and limited-slip units. Popular in late-model Ford truck rear differentials and many other applications.

80W140: Designed for commercial trucks climbing long, steep grades and certain racing applications. Can reduce excessive noise in differentials and transmissions, and minimizes vibration in limited-slip differentials during cornering. Exceeds API GL-5.

75W90 NS: GL-5-type gear oil without friction modifiers for limited-slip differentials. Allows transmission synchronizers to equalize speeds more quickly for faster shifting and improved low-temperature operation. Also suitable for racing limited-slip differentials with weak spring designs.

75W140 NS: Heavier viscosity GL-5-type oil without friction modifiers, effective across a wide range of loads and temperatures. Provides quicker synchronizer engagement for faster shifting and easier cold-weather operation.

SuperLight Gear Oil: Friction-modified 75W75 GL-5 equivalent designed for applications requiring lighter viscosity. Features excellent low-temperature flow for easier cold shifting and good synchronizer compatibility. Used in many motorcycle applications and low-temperature racing differentials.

LightWeight Gear Oil: Friction-modified 75W80 GL-5 equivalent offering excellent cold-flow properties and synchronizer compatibility. Popular for motorcycle applications and maximum power transfer in racing differentials operating at moderate temperatures.

Limited Slip Friction Modifier: Compatible additive for petroleum or synthetic gear oils that reduces differential break-in friction and lowers break-in temperatures by up to 50°F. Eliminates chatter in limited-slip and positraction units when added in appropriate quantities.