Motul Gear 300 Fully Synthetic Gearbox Oil 75W90 1L Pack of 4

In this review the focus is on who benefits most from Motul Gear 300 and why it stands out as a gearbox oil option. The bottom line: this fully synthetic, ester-based 75W90 oil is best for drivers who want a durable, low-shear film that improves shift feel and reduces transmission noise. The review highlights real-world advantages such as smoother shifting, consistent protection at high temperatures and value for money when purchased as a pack of four, based on customer feedback and the product's formulation.

Key Features

• 100 Percent Synthetic Ester based: provides a robust synthetic base that supports high film strength and long-term durability in gear train components.
• Extreme pressure formulation: delivers efficient anti-wear protection to reduce component wear under heavy loads and protect synchronizers in manual gearboxes.
• Unshearable oil film: resists shear loss in extreme conditions so viscosity and protection remain stable over time and use.
• 75W90 viscosity with hot 90 grade: gives outstanding oil film resistance at operating temperatures and helps reduce transmission noise under load.
• Smoother shifting: the formulation reduces effort on the gear lever for crisper, more precise shifts noted by users in manual transmissions.

Who It's For

Motul Gear 300 is aimed at owners of manual transmissions who prioritize long-term gear protection and improved shift quality, including drivers of performance and daily-driver cars who want a synthetic upgrade from stock gear oil. It is also a sensible choice for anyone looking to buy lubricant in bulk to save on per-liter cost, as the pack of four lowers replacement expense.

Drivers who require specialized OEM-specified fluids for limited-slip differentials or automatic transmissions should check vehicle requirements before switching, as this is formulated as a manual gearbox and gear oil solution rather than a multi-application automatic fluid.

Pros & Cons

Pros

• Consistent reports of smooth shifting and reduced transmission noise after changing to this oil.
• High-temperature viscosity stability provides sustained oil film resistance under heat and load.
• Good value for money when purchased as a multi-pack, with customers praising functionality and performance.
• Fully synthetic ester base offers strong anti-wear properties for long-term gearbox protection.

Cons

• Not a universal replacement for specialized OEM or limited-slip fluids; users should confirm compatibility for their specific differential or transmission.
• Packaging in 1L bottles means multiple bottles are needed for larger gearboxes despite the pack providing four liters in total.

Specifications

Product	Gearbox oil
Brand	Motul
Viscosity grade	75W90 (90 grade at hot temperature)
Base type	100 Percent synthetic ester based
Protection	Extreme pressure anti-wear lubricant
Shear stability	0 Percent shear loss, unshearable oil film
Pack size	1L bottles, pack of 4

Our Verdict

Motul Gear 300 is a strong choice for manual transmission owners who want a reliable, high-temperature stable synthetic gear oil that improves shift feel and reduces wear. The ester-based formulation and extreme-pressure protection make it a practical upgrade from many OEM fluids, and the pack of four represents good value for regular maintenance.

Frequently Asked Questions

Can this oil improve shift feel?
Yes. Customers consistently report smoother, easier gear changes and reduced lever effort after switching to this oil.

Is this suitable for all gearboxes?
It is formulated for manual gearboxes and gear units; check your vehicle's OEM requirements before using it in limited-slip or specialized differentials.

How much protection does it offer at high temperature?
The 75W90 viscosity with a hot 90 grade provides outstanding oil film resistance and maintains protection under high-temperature conditions.