Purpose and Specifications

MOTUL Motylgear 75W-80 Transmission Oil (103999) is a high-performance synthetic-blend gear oil designed for manual transmissions in passenger cars, especially those with hard-to-shift gearboxes like Peugeot, Citroën, and Renault models. This 20-liter drum provides bulk supply for workshops or large fleets.

It delivers superior anti-wear protection to extend gear life under heavy loads, stays thick up to 120°C for quiet operation during hot drives, and flows smoothly at -40°C for easy cold starts. The 75W-80 grade reduces gearbox drag, improving fuel efficiency while maintaining a strong oil film against friction and shock loads.

• Volume: 20 liters in a durable tank-style container
• Key Benefits: Smoother shifting, less noise, longer transmission life
• Suitable for: Synchronized or non-synchronized gearboxes without limited-slip differentials

When to Use / Replace?

Use this oil in daily drivers, light trucks, or performance cars facing high loads or temperature swings. Ideal for transmissions that grind or whine during shifts.

• Replace every 60,000 km or 36 months under normal driving
• For severe use (towing, racing, extreme temps), change every 30,000 km or 24 months
• Shelf life: 5 years unopened in cool, dry storage

FAQ

Q: Is MOTUL 103999 safe for my French car gearbox?
A: Yes, it's specially recommended for Peugeot, Citroën, and Renault transmissions that are stiff or noisy, making shifts buttery smooth.

Q: What temps does it handle?
A: Flows easily at -40°C for winter starts and resists breakdown up to 120°C on hot summer highways or track days.

Q: How much for a full flush?
A: Most cars need 2-3 liters; this 20L drum covers 6-10 vehicles, perfect for mechanics.