Red Line Oil 57934 Synthetic Gear Oil - Multiple Viscosities Available

Red Line Synthetic Gear Oil delivers maximum protection and efficiency for differentials, transmissions, and transaxles across automotive, commercial, and racing applications. Formulated with advanced polyol ester base stocks, this premium lubricant provides exceptional protection under extreme high-load and high-temperature conditions while reducing sliding friction in hypoid gears to minimize wear and heat buildup.

Key Features:

• Polyol ester base stocks provide superior natural lubricity and film strength
• Natural multigrade properties ensure stable viscosity during extended use
• Reduces friction and operating temperatures in hypoid gear applications
• Available in multiple viscosity grades to meet manufacturer specifications
• Specific formulations for conventional and limited-slip differentials
• Exceeds API GL-5 specifications for demanding gear applications

Available Viscosity Grades:

75W90: The most popular option for car and light truck differentials, both conventional and limited-slip. Contains friction modifier for limited-slip units. Ideal for most racing applications and exceeds API GL-5.

75W140: GL-5 rated product for street-driven differentials requiring heavier viscosity. Excellent for both conventional and limited-slip units. Popular in late-model Ford truck rear differentials.

80W140: Designed for commercial trucks climbing long, steep grades and select racing applications. Can reduce excessive noise in differentials and eliminate limited-slip chatter. Exceeds API GL-5.

75W90 NS (Non-Slip): GL-5-type oil without friction modifiers, allowing faster synchronizer engagement and easier cold-weather shifting. Suitable for transmissions and racing limited-slip differentials with weak spring designs.

75W140 NS: Heavier non-friction-modified formula for wide-ranging loads and temperatures. Enables quicker synchronizer action and improved shift quality.

SuperLight Gear Oil: Friction-modified 75W75 GL-5 equivalent with excellent cold-flow properties. Popular for motorcycle applications and racing differentials that don't experience high temperatures.

LightWeight Gear Oil: Friction-modified 75W80 GL-5 equivalent offering superior cold-weather shifting and synchro compatibility. Alternative to ShockProof formulations for motorcycles and moderate-temperature racing differentials.

Limited Slip Friction Modifier: Additive compatible with petroleum or synthetic gear oils that reduces differential break-in friction and temperatures by up to 50°F. Eliminates limited-slip chatter—add only enough to stop chatter without over-lubricating clutch packs.

Red Line's synthetic formulations require minimal unstable thickeners, ensuring consistent performance even during extended drain intervals and severe-duty operation.