Purpose and Specifications

MOTUL TRANSOIL EXPERT 10W40 is a semi-synthetic gearbox oil designed for motorcycles, scooters, quads, and ATVs with wet clutches and separate transmission cases. Its 10W40 viscosity flows smoothly in cold starts down to -36°C and stays thick under high heat up to 240°C flash point, protecting gears during racing or heavy loads.

This API GL-4 rated oil prevents clutch slippage for full power transfer, reduces gear wear, fights corrosion, and keeps clutch plates clean for reliable performance in extreme conditions like competition riding.

When to Use / Replace?

Use in 2-stroke or 4-stroke bikes, trails, enduro, or karts requiring SAE 10W-40 or SAE 90 transmission oil. Ideal for high-stress riding where engine oil can't mix with gearbox.

• Replace every 5,000-10,000 km or 6-12 months for street use; more often (every race or 2,000 km) in competition.
• Change if shifting feels rough, clutch drags, or after water exposure.
• Shelf life: 3-5 years unopened in cool, dry storage.

FAQ

Is this safe for wet clutch motorcycles? Yes, it avoids slippage while ensuring smooth shifts and clean discs.

Can I use it in cold weather? Absolutely, pours easily at -36°C for quick protection on chilly mornings.

What's the oil change interval? Follow your manual, typically every 5,000-10,000 km or annually for best gear life.