Red Line Oil 58124 Synthetic Gear Oil 75W90 GL-5

Red Line Synthetic Gear Oil delivers superior protection and efficiency for drivetrains operating under demanding conditions. Formulated with advanced polyol ester base stocks, this synthetic gear oil provides exceptional lubrication under extreme high-load and high-temperature environments. The natural lubricity of these synthetic esters reduces sliding friction in hypoid gears, minimizing wear and operating temperatures while maximizing power transfer.

Key Features:

• Polyol ester base stocks for superior film strength and thermal stability
• Natural multigrade properties ensure stable viscosity over extended service intervals
• Reduced sliding friction in hypoid gears minimizes wear and heat
• Available in multiple viscosity grades for diverse applications
• Specialized formulations for both limited-slip and conventional differentials

Available Viscosity Grades:

75W90: The most popular formulation for nearly all passenger car and light truck differentials. Contains friction modifier for limited-slip units and exceeds API GL-5 specifications. Ideal for racing applications and provides excellent performance in both conventional and limited-slip differentials.

75W140: API GL-5 rated gear oil for street-driven vehicles where heavier viscosity is specified. Popular in late-model Ford truck rear differentials and provides excellent protection in both conventional and limited-slip units.

80W140: Designed for commercial trucks climbing steep grades and select racing applications. Suitable for differentials and transmissions with excessive noise issues. Exceeds API GL-5 specifications.

75W90 NS (Non-Slip): GL-5-type formulation without friction modifiers, allowing transmission synchronizers to engage more quickly for faster shifting and improved cold-weather performance. Can be used in racing limited-slip differentials with weak spring designs.

75W140 NS: Heavier viscosity GL-5-type oil without friction modifiers, offering excellent performance across wide temperature and load ranges while maintaining rapid synchronizer engagement.

SuperLight Gear Oil: Friction-modified 75W75 GL-5 equivalent designed for applications requiring lighter viscosity. Features excellent cold-flow properties for easier shifting and is popular in motorcycle applications.

LightWeight Gear Oil: Friction-modified 75W80 GL-5 formulation for maximum power transfer in applications requiring lighter viscosity. Excellent synchro compatibility and cold-weather performance.

Limited Slip Friction Modifier: Additive compatible with petroleum or synthetic gear oils that reduces differential break-in temperatures by up to 50°F and eliminates chatter in limited-slip and positraction units.