Purpose and Specifications

LIQUI MOLY 5135 ATF Additive is a premium 250ml treatment for automatic transmissions and power steering systems using ATF II and ATF III oils. This powerful formula keeps rubber and plastic seals soft and flexible, preventing leaks from hardened seals that cause oil loss and costly repairs. It cleans internal oil passages for smooth fluid flow, reduces transmission noise, and improves shifting for a quieter, smoother drive.

One 250ml tube treats 4-8 liters of ATF fluid, perfect for most cars. Add it via the dipstick after an oil change to boost wear resistance, stabilize oil against heat up to 150°C operating temps, and extend transmission life by thousands of kilometers. Shelf life is 5 years unopened; use within 2 years once mixed.

When to Use / Replace?

• Preventive maintenance: Add every 40,000-60,000 km or 24 months during ATF changes to stop leaks early and maintain performance in daily driving.
• Fix issues: Use if you notice slipping gears, harsh shifts, whining noises, or leaks – revives seals and cleans buildup for like-new operation.
• High-heat conditions: Ideal for hot climates or towing where temps exceed 100°C, preventing rapid oil breakdown.

Replace ATF fluid every 60,000-100,000 km depending on your vehicle; this additive doubles the effective life by slowing aging.

FAQ

Is it safe for all automatic transmissions?
Yes, compatible with ATF II and III oils in most vehicles – check your manual for oil type.

How soon do I see results?
Improvements in shifting and noise reduction often noticeable after 100-500 km of driving.

Can I use it in power steering?
Absolutely, it cares for seals there too, reducing steering effort and leaks.