Ensure maximum protection and optimal power transfer in your high-stress drivetrain with Red Line 75W140NS Gear Oil (SKU: 57104), available at Straight Six Imports. The "NS" designation stands for Non-Slip, meaning this formula contains the extreme pressure (EP) additives required for GL-5 protection but lacks the friction modifiers found in standard gear oils. This makes it the ideal choice for specific manual transmissions and racing differentials where maximum friction is required for performance.

Red Line 75W140NS is engineered using polyol ester base stocks to maintain a consistent film thickness even under extreme temperatures and heavy loading, typical of competitive racing and high-torque builds.

Key Performance Benefits & Applications:

• Superior Syncro Performance: Because it lacks friction modifiers, 75W140NS allows synchronizers to reach equal speeds more quickly. This results in faster, more precise shifting and eliminates the "notchy" feel often found in high-performance manual gearboxes.

• Maximum LSD Lock-Up: Ideal for clutch-type limited-slip differentials (LSDs) used in racing. It provides maximum lock-up for improved traction. Tuners can also add Red Line's friction modifier in small, precise doses to "tune" the amount of slip desired.

• High-Temperature Stability: Designed to reduce differential temperatures by 10-70 F, significantly extending the life of your gears, bearings, and seals during track days or heavy towing.

• Targeted Vehicle Fitment: Widely recommended for high-performance platforms, including:

  • Mitsubishi Evolution (VIII, IX, X), 3000GT VR-4, and DSM manual transmissions.

  • Historic and Vintage gearboxes (1930s–1950s) that require an SAE 140 weight with synchro compatibility.

  • Problematic transmissions like the Dodge/Plymouth A-833 4-speed to quieten noise and improve shift quality.

• Advanced Synthetic Formula: Exceeds API GL-5 and MT-1 specifications. It provides superior shear stability and oxidation resistance compared to conventional synthetic gear oils.

Invest in the lubrication that professional racers and enthusiasts trust. Order your Red Line 75W140NS (1 Quart, 57104) from Straight Six Imports today for fast Canadian shipping and ultimate drivetrain reliability.