Castrol Trans ATF Z – Premium Full Synthetic Automatic Transmission Fluid

Equivalent to MOBIL ATF LT 71141

Product Overview

Castrol Trans ATF Z is a high-performance, fully synthetic automatic transmission fluid engineered for modern passenger vehicles requiring exceptional shift performance, extended service intervals and superior thermal stability. Developed using advanced synthetic base oils and precision-balanced additive technology, this premium fluid delivers smooth and consistent transmission operation while protecting critical components against wear, oxidation and deposit formation.

Modern automatic transmissions operate under increasingly demanding conditions, including higher operating temperatures, tighter tolerances and complex electronic control systems. Castrol Trans ATF Z is designed to meet these challenges by maintaining stable viscosity, reliable friction characteristics and excellent oxidation resistance across a wide temperature range. This ensures consistent gear shifting, reduced transmission noise and extended component life.

This fluid is particularly suited to vehicles requiring long-life automatic transmission fluids, especially where smooth shifting performance and durability are critical. It is commonly used in European and Asian passenger vehicles equipped with conventional automatic transmissions that specify high-quality synthetic ATF formulations.

Specifications & Approvals

Castrol Trans ATF Z meets or exceeds the following key performance requirements and manufacturer specifications:

Industry & OEM Performance Levels

• Suitable for applications requiring DEXRON® III performance
• Suitable for MERCON® (where specified)
• Suitable for AL-4 transmissions
• Meets requirements for many ZF automatic transmissions
• Suitable for transmissions requiring long-life synthetic ATF
• Compatible with a wide range of electronically controlled automatic transmissions

Application Compatibility

• Passenger vehicles requiring premium synthetic ATF
• European vehicles specifying high-performance ATF
• Asian vehicles requiring smooth shift characteristics
• Systems requiring enhanced oxidation stability and long fluid life

This product is not intended for use where DEXRON® VI, CVT fluids or dual-clutch transmission fluids are specified unless explicitly approved by the manufacturer.

Key Features & Benefits

Full Synthetic Performance

Formulated with high-quality synthetic base oils, Castrol Trans ATF Z provides superior resistance to thermal breakdown, ensuring consistent performance over extended service intervals.

Smooth and Precise Gear Shifting

Advanced friction modifiers maintain stable friction characteristics, enabling smooth gear engagement and preventing shudder, slip or harsh shifting under varying driving conditions.

Excellent Thermal Stability

Resists oxidation and degradation at elevated temperatures, preventing sludge formation and maintaining fluid cleanliness within the transmission system.

Extended Fluid Life

Designed for long service intervals, reducing maintenance frequency and lowering total cost of ownership.

Enhanced Wear Protection

Protects gears, clutches, bearings and valve bodies from wear, ensuring long-term transmission durability.

Improved Low-Temperature Fluidity

Maintains excellent flow characteristics at low temperatures, ensuring rapid lubrication during cold starts and reducing wear during initial operation.

Seal Compatibility

Compatible with common elastomers and sealing materials, helping prevent leaks and maintain system integrity.

Reduced Noise and Vibration

Optimised friction properties reduce transmission noise and vibration, improving overall driving comfort.

Applications

Castrol Trans ATF Z is recommended for use in:

• Conventional automatic transmissions in passenger vehicles
• European vehicles requiring high-performance synthetic ATF
• Asian vehicles requiring smooth shift performance
• Light commercial vehicles with automatic transmissions
• Power steering systems where synthetic ATF is specified
• Certain hydraulic systems requiring ATF-type fluids

Always consult the vehicle manufacturer’s handbook to confirm suitability before use.

Typical Physical Properties

Typical values only and may vary slightly within normal manufacturing tolerances.

Handling & Storage Advice

• Store in a cool, dry, well-ventilated area away from direct sunlight
• Keep containers tightly sealed when not in use
• Prevent contamination from dirt, water or other lubricants
• Use clean dispensing equipment
• Do not mix with other transmission fluids unless compatibility is confirmed
• Dispose of used fluid and containers according to local environmental regulations
• Shelf life up to 5 years in unopened containers when stored correctly

Advantages for Workshops & Fleet Operators

• Premium synthetic formulation suitable for high-performance transmissions
• Extended service intervals reduce maintenance costs
• Smooth shifting improves driver comfort and transmission longevity
• Compatible with a wide range of vehicles, simplifying inventory
• Reliable performance under both high and low temperature conditions
• Ideal for professional workshops and fleet servicing environments