Purpose and Specifications

Febi Bilstein 40580 is a high-performance 75W-80 synthetic gear oil (GL-5) in a 1-liter yellow bottle, designed for manual transmissions, transaxles, differentials, and limited-slip differentials (LSD) in vehicles like Audi A4, S4, S5, TT, Volkswagen Passat, BMW, and more.

This fully synthetic formula blends premium base oils with extreme pressure additives to protect gears from wear, corrosion, and oxidation during daily driving or heavy loads. It ensures smooth shifting in cold starts down to -40°C and stays stable up to 150°C, reducing fuel use and extending transmission life.

• Volume: 1 liter – perfect for most drain-and-fill services
• Replacement interval: Every 60,000 km or 3 years for optimal protection
• Shelf life: 5 years unopened in cool, dry storage

When to Use / Replace?

Use Febi 40580 when servicing manual gearboxes on European cars like Audi, VW, or BMW to prevent grinding, improve shift feel, and avoid costly repairs. Replace if fluid is dark, smells burnt, or during clutch jobs – typically every 60,000 km or 36 months under normal conditions, sooner (40,000 km) for towing or severe use.

It flows easily in winter for quick warm-ups and holds thick in summer heat, keeping power smooth from -40°C to 150°C.

FAQ

Q: Is this oil safe for my Audi or VW manual transmission?
A: Yes, it's OE-spec for models like Audi A4 Quattro, TT, VW Passat – protects gears and LSD perfectly.

Q: How often should I change it?
A: Change every 60,000 km or 3 years; check level monthly if towing.

Q: Will it make shifting smoother?
A: Absolutely – synthetic blend cuts friction for effortless shifts hot or cold.