Purpose and Specifications

MOTUL GEAR COMPETITION 75W140 is a 100% synthetic ester-based transmission oil designed for racing vehicles, including gearboxes, hypoid differentials with limited slip systems, and transfer cases under extreme conditions like high shocks, heavy loads, or high speeds.

It delivers 0% shear loss for an unshearable oil film that holds up in extreme heat up to 212°C, reducing friction, wear, and transmission noise while staying fluid at low temperatures for smooth cold starts and easy gear shifts with less lever effort.

Meets API GL-5 standards (also compatible with GL-4), proven in Le Mans 24H, Japanese GT, Hewland, and X-TRAC applications. The 20L drum suits bulk service for race teams or shops.

When to Use / Replace?

Use in racing transmissions, rally cars, track vehicles, or high-performance street cars with limited-slip diffs experiencing heavy loads or high temps. Ideal for smooth shifting and long component life under stress.

• Replace every 10,000-20,000 km or annually for track/race use, or follow manufacturer intervals adjusted for severe conditions.
• Change sooner if operating in temps over 100°C regularly or after heavy abuse.
• Shelf life: 3-5 years unopened in cool, dry storage.

FAQ

Q: Is this oil safe for my daily driver?
A: Best for racing or high-performance use; for street cars, check if your manual specifies 75W140 and GL-5 compatibility to avoid clutch issues in some limited-slip setups.

Q: How much for a typical diff change?
A: Most car diffs need 1.3-1.8L (e.g., Nissan Z cars); this 20L drum is perfect for multiple services or team use.

Q: Does it quiet noisy gears?
A: Yes, the 140 hot viscosity grade reduces transmission noise and drag in limited-slip diffs with built-in friction modifiers.