Purpose and Specifications

MOTUL HD 80W90 Transmission Oil in 20L bulk is a tough mineral-based gear oil built for heavy-duty mechanical transmissions, including synchronized and non-synchronized gearboxes, differentials, transfer boxes, and hypoid axles without limited-slip systems. It handles high loads, shocks, low speeds, and moderate-to-high RPMs while delivering extreme pressure protection to cut friction and wear.

Key Practical Benefits:

• Stays thick at hot temps up to 210°C flash point, keeping a strong oil film to quiet gears and prevent metal-on-metal contact during hard use.
• Flows smoothly down to -27°C pour point, ensuring easy cold starts without grinding.
• Anti-foam and anti-corrosion formula protects seals and yellow metals in your gearbox design.
• Meets API GL4/GL5 and MIL-L-2105D standards for reliable performance in trucks, cars, and machinery.

When to Use / Replace?

Use MOTUL HD 80W90 for transmissions under heavy loads like towing, off-road, or commercial vehicles operating from -27°C to over 100°C. Replace every 40,000-60,000 km or 24-36 months based on manufacturer guidelines, or sooner if you notice gear noise, slipping, or leaks. Shelf life is 3-5 years unopened in cool, dry storage.

FAQ:

Is MOTUL HD 80W90 safe for my manual gearbox?
Yes, it works perfectly in synced or non-synced gearboxes, reducing wear and noise under high stress.

Can it handle hot weather towing?
Absolutely, it maintains 90-grade thickness at high temps for superior film strength during heavy loads.

How often should I change it?
Follow your vehicle manual, typically every 40,000-60,000 km or 2 years for optimal protection.