Purpose and Specifications

CASTROL Transmax Manual EP 80W is a mineral-based transmission oil designed specifically for manual transmissions in cars, light trucks, and commercial vehicles. This fluid keeps your gearbox running smoothly by reducing friction between moving parts, preventing wear, and protecting against corrosion.

This product meets API GL-4 specification and is approved for vehicles requiring MB 235.1 and ZF TE-ML 17A standards. The 80W viscosity grade means the oil flows easily in cold conditions while maintaining protective thickness at normal operating temperatures (typically -20°C to +90°C).

Key Benefits:

• Smooth, quiet gear shifts with reduced grinding and noise
• Extended transmission component life through anti-wear protection
• Better cold-weather performance for reliable starting and shifting
• Mineral oil base provides cost-effective protection for older and standard transmissions

When to Use / Replace?

Replace this transmission oil every 40,000 to 80,000 kilometers (25,000 to 50,000 miles) or every 2 to 4 years, whichever comes first. Check your vehicle's owner's manual for the exact interval, as some vehicles may require more frequent changes under severe driving conditions (heavy towing, frequent city driving, or mountainous terrain).

This fluid is compatible with popular vehicle models including BMW E30, Opel Corsa, VW Transporter, Nissan Terrano, and Mercedes Vito. Always verify your vehicle's specific transmission fluid requirement before purchasing.

Storage: Keep in a cool, dry place. Shelf life is typically 3 to 5 years in unopened containers.

Frequently Asked Questions

Q: Can I use this oil in automatic transmissions?
A: No. This is formulated exclusively for manual transmissions. Automatic transmissions require different fluid with specific friction modifiers. Using the wrong fluid can cause transmission damage.

Q: What happens if I don't change the transmission oil regularly?
A: Old oil loses its protective properties, leading to increased wear on gears and bearings, difficult shifting, grinding noises, and eventually costly transmission repairs or replacement.

Q: Is this mineral oil suitable for modern vehicles?
A: This mineral oil works well for vehicles manufactured before the 2000s and those specifically approved for API GL-4 mineral fluids. Modern vehicles often require synthetic or semi-synthetic fluids. Always check your owner's manual to confirm compatibility.