MOTUL GEAR 300 75W‑90 is a premium fully-synthetic, ester-based gear oil designed for the most demanding gearboxes and differentials—especially in motorsport, rally, raid, and high-load applications. Perfect for manual transmissions, transfer cases, and hypoid differentials without limited-slip systems, this fluid thrives under extreme conditions like high torque, shock loading, and elevated RPMs. 

Key Benefits

• Superior Shearing Resistance
  Maintains SAE 90 viscosity even after 20 hours of KRL shear testing, ensuring consistent protection and reliable shifting.

• Extreme Pressure & Anti-Wear Protection
  Enriched with EP additives and synthetic esters to combat wear, gear pitting, and transmission noise under heavy load and high temperatures.

• Cold-Start Performance
  Fluid at low temperatures for easier, smoother shifting and reduced gear lever effort in cold environments.

• Component Compatibility
  Safe for yellow metals (e.g., synchroniser collars), seals, and all gearbox materials. This GL‑4/GL‑5-rated oil is versatile enough for a wide range of mechanical systems.

• Clean & Stable
  Includes anti-foam, anti-corrosion, and anti-emulsion additives for long-lasting protection and gearbox reliability.

 Recommended Applications

• Racing and Off‑Road: Ideal for rally cars, speedway, and endurance environments where gearboxes see heavy shocks and extreme temps.

• High‑Load Gearboxes: Suitable for manual transmissions (synced or not), transfer cases, propeller boxes, and straight-cut-gear setups.

• Car Enthusiasts & Track Use: Trusted by gearhead communities—users report smooth shifting in Subaru rears, Raptors, and other high-stress drivetrains .