Motul Gear 300 75W-90 Transmission and Differential Fluid Full Synthetic Ester Gear Oil - 1L

Motul Gear 300 75W-90 is a high-performance fully synthetic ester-based gear oil engineered for manual transmissions, differentials, and drivetrain components operating under extreme load and high-performance conditions.

Designed for smooth shifting, reduced friction, and maximum protection, Gear 300 delivers consistent performance under high torque, aggressive driving, and motorsport environments.

Built using ester core technology, this fluid provides excellent film strength, thermal stability, and wear protection for both street and track applications.

Performance tier

Top tier – street / track

Developed for performance driving, aggressive street use, and motorsport applications where drivetrain protection and shift consistency are critical

Variants

1L – single bottle
standard size for transmission and differential service

Features

100% synthetic ester-based gear oil
75W-90 viscosity for balanced performance
Smooth and consistent shifting performance
High film strength for gear protection under load
Excellent resistance to heat and shear breakdown
Reduces wear and extends drivetrain life

Fitment

Subaru WRX 1992–2026
Subaru STI 1994–2021
Manual transmissions and differentials

Compatible with synchronized and non-synchronized gearboxes

Specifications

Type: 100% synthetic ester-based gear oil
Viscosity: 75W-90
API rating: GL-4 / GL-5
Available size: 1 liter (1.05 qt)
Brand: Motul

How much do you need

Most subaru manual transmissions require approximately 3.5–4 liters

Rear differential typically requires approximately 0.8–1 liter

Recommended purchase: 5 liters for complete transmission and differential service

Note

Not recommended for automatic transmissions

Always verify fluid requirements based on specific vehicle setup

Recommended pairings

Motul 300v engine oil
Motul rbf 600 or rbf 660 brake fluid
Motul motocool coolant