Purpose and Specifications

ZF LifeguardFluid 7.1 MB ATF Transmission Oil (5961.307.351) is a fully synthetic fluid designed to protect modern automatic transmissions in vehicles like Mercedes-Benz and ZF gearboxes. It keeps shifts smooth and precise by maintaining steady thickness in high heat up to 150°C and cold starts down to -40°C, while resisting breakdown for up to 100,000 km service intervals.

• 1-liter bottle perfect for top-ups or full changes
• Reduces wear on clutches and gears under heavy loads
• Lowers noise and vibration for quieter driving
• Shelf life of 5 years unopened when stored cool and dry

When to Use / Replace?

Use this oil when your vehicle's manual specifies ZF Lifeguard 7.1 or MB 236.14, such as in Mercedes CLS, SLK, and similar models from 2000-2011. Replace every 60,000-100,000 km or 4-5 years, or sooner if towing heavy loads or in extreme temperatures to prevent slipping shifts and overheating.

FAQ

Is ZF Lifeguard 7.1 safe for my Mercedes transmission?
Yes, it's the exact factory-approved fluid for MB 236.14 spec transmissions, ensuring full compatibility and warranty protection.

How often should I change this transmission oil?
Typically every 60,000-100,000 km or 4 years, but check your owner's manual and change sooner if fluid looks dark or burnt.

Can I mix it with other ATF fluids?
No, always use pure ZF Lifeguard 7.1 to avoid shift issues or damage—flush the system first if switching.