Purpose and Specifications

RAVENOL MZG SAE80 GL-4 1L is a premium mineral-based gear oil designed for manual transmissions, differentials, and steering systems in older vehicles. It delivers strong protection under heavy loads, prevents wear on gears, and resists breakdown from heat and oxidation for smoother shifts and longer component life.

This oil maintains consistent thickness across a wide temperature range from -30°C cold starts to over 120°C high-heat operation, ensuring easy gear changes in all weather without foaming or corrosion. Approved for API GL-4, MB 235.1, ZF TE-ML 02A/17A, MAN 341 E1/Z1, and more, it's perfect for classic cars and trucks needing reliable EP additives that won't harm yellow metals like brass.

• High load capacity for towing and off-road use
• Excellent cold flow for quick winter startups
• Superior oxidation stability extends service intervals up to 60,000 km or 3 years
• 1L bottle ideal for precise top-ups or small fills

When to Use / Replace?

Use RAVENOL MZG SAE80 GL-4 when your vehicle manual specifies SAE 80 GL-4 or GL-3 gear oil, especially in high-stress manual gearboxes from Mercedes, ZF, Ford, or MAN vehicles built before 1990. Ideal for daily drivers, classics, or heavy-duty applications where smooth operation matters.

Replace every 40,000-60,000 km or every 24-36 months, or sooner if you notice hard shifting, grinding noises, or burnt oil smell. Shelf life is 5 years unopened when stored cool and dry.

FAQ

Is this safe for my brass synchronizers? Yes, GL-4 formula is non-aggressive to copper alloys, protecting synchros for precise shifts unlike harsher GL-5 oils.

Can I use it in cold climates? Absolutely, low pour point ensures flow down to -30°C for reliable starts and lubrication.

How much for a full transmission fill? Typically 1.5-3L depending on model; check your manual and use this 1L for maintenance top-ups.