Motul Gear Competition 75W140 – Synthetic LSD Gear Oil GL-5

Motul Gear Competition 75W140 is a 100 % synthetic GL-5 gear oil formulated with Ester Technology for high-performance transmissions and Limited Slip Differentials (LSD). Designed for racing and endurance use, it provides exceptional film strength, zero shear loss and full protection against wear under extreme load and temperature.

Key Advantages

• Zero shear loss: maintains stable viscosity and oil film even under extreme torque.
• Outstanding EP protection: exceeds API GL-5 standards; proven in Mugen Le Mans 24 h endurance racing.
• Optimised 75W-140 viscosity: ensures quiet operation and stable lubrication at high temperatures.
• Excellent low-temperature fluidity: smooth gear shifts down to −36 °C.
• Safe for yellow metals: non-corrosive to copper, brass and bronze synchronisers; compatible with seals.

Applications – Motorsport & JDM Performance

Ideal for Honda (Civic Type R, Integra, S2000), Subaru (WRX STI, BRZ), Mitsubishi (Lancer Evolution) and Nissan (370Z, GT-R) gearboxes and differentials equipped with LSD. Perfect for track days, drift, time-attack and endurance racing where heat, torque and shear stability are critical.

Technical Specifications (Motul Official Data)

• Standard / Specification: API GL-5 / Mugen Le Mans 24 h approved / Hewland & X-Trac tested
• Viscosity grade: SAE 75W-140
• Density @ 20 °C: 0.903 g/cm³
• Kinematic viscosity @ 40 °C: 170 mm²/s
• Kinematic viscosity @ 100 °C: 24.7 mm²/s
• Viscosity index: 178
• Pour point: −36 °C
• Flash point: 212 °C
• Colour: blue tint

Comparison: Motul Gear Competition 75W140 vs Gear 300 75W90

Usage and Compatibility Guidelines

• Change interval: every 20–30 000 km or once per season under track conditions.
• Mixing: do not mix with DOT 5 (silicone) or mineral LHM fluids; flush system before refill.
• Storage: store sealed and protected from moisture and dust.

FAQ – Common Questions about Motul Gear Competition 75W140

Is Motul Gear Competition 75W140 suitable for Honda Civic Type R?

Yes – perfect for LSD-equipped Civics (Type R, Integra, S2000). For non-LSD boxes, use Motul Gear 300 75W90 for smoother shifting.

What is the difference between Gear Competition and Gear 300?

Gear Competition 75W140 offers higher viscosity and LSD friction modifiers, while Gear 300 75W90 is more versatile for manual transmissions and open differentials.

Is 75W140 too thick for street use?

No – it works well in high-power cars or those with LSD. For regular road cars without LSD, 75W90 is recommended.

How often should Motul Gear Competition 75W140 be changed?

Change every 20–30 000 km or once per racing season to maintain maximum film strength and friction stability.

Is it safe for synchronisers and yellow metals?

Yes – formulated with non-corrosive EP additives; meets ASTM D130 1a/1b copper corrosion standard for full protection.