Purpose and Specifications

ZF Lifeguard Hybrid3 5961.308.374 is a fully synthetic automatic transmission oil designed for hybrid vehicles with 9-speed automatic transmissions like the ZF 9G-Tronic. It ensures smooth shifting, protects gears and bearings under high heat from electric motors, and maintains efficiency in hybrid drivetrains.

This 1-liter bottle oil works perfectly in Mercedes-Benz V-Class models (W447) from 2019 onward and BMW hybrids such as 330e, 530e, and X5 40e. It handles operating temperatures from -40°C for cold starts to over 100°C in hot conditions, preventing wear and sludge buildup for reliable performance.

• Smooth, vibration-free gear changes even under heavy loads
• Extended transmission life with superior protection against friction and oxidation
• Optimal for hybrids: Manages extra heat from electric components
• Genuine ZF quality: Factory-approved for Mercedes-Benz and compatible with BMW, Audi, Volvo

When to Use / Replace?

Use this oil for service in ZF 9G-Tronic hybrid transmissions. Though often labeled 'lifetime', experts recommend replacement every 60,000 to 100,000 km or 4-5 years to avoid sluggish shifts, delays in gear engagement, or contamination from wear particles.

Replace sooner if you tow heavy loads, drive in extreme heat over 35°C, or notice rough shifting. Shelf life is 5 years unopened when stored cool and dry.

FAQ

Is ZF Lifeguard Hybrid3 suitable for non-hybrid cars?
No, it's specially formulated for hybrid 9-speed transmissions like 9G-Tronic in Mercedes V-Class and BMW plug-in hybrids. Using the wrong oil can cause damage.

How often should I change the transmission fluid?
Every 80,000 km or 4 years for preventive maintenance, especially in demanding conditions like frequent acceleration or hot climates.

Does it work in cold weather?
Yes, it flows easily down to -40°C, ensuring quick lubrication and no startup delays even in freezing temps.