Castrol Transmax ATF DEX/MERC MV – Automatic Transmission Fluid (20 L) Replaces 3371179 - Castrol ATF DEX III 20L Product Overview Castro…
We accept
Replaces 3371179 - Castrol ATF DEX III 20L
Castrol Transmax ATF DEX/MERC MV is a premium multi-vehicle automatic transmission fluid formulated to meet the performance requirements of a wide range of automatic transmissions, power steering systems and hydraulic applications requiring DEXRON® or MERCON® type fluids. Developed using high-quality base oils and advanced friction modifier technology, this fluid delivers smooth shifting performance, reliable torque transfer and long-term transmission durability across diverse operating conditions.
Automatic transmissions rely on precise hydraulic control, friction stability and thermal resistance to operate efficiently. Castrol Transmax ATF DEX/MERC MV is engineered to maintain consistent frictional behaviour over extended service intervals, helping prevent shift shudder, delayed engagement and harsh gear changes. Its carefully balanced additive system protects internal transmission components such as clutches, bands, valves and bearings against wear, oxidation and deposit formation.
The 20-litre packaging format is ideally suited for professional workshops, fleet service centres, transmission specialists and industrial users who require bulk supply for servicing multiple vehicles or equipment. This product supports both older and newer automatic transmission designs that specify DEX/MERC performance levels, making it a versatile solution for mixed fleets.
Castrol Transmax ATF DEX/MERC MV meets or exceeds the following industry specifications and manufacturer performance requirements:
DEXRON®-III (H)
MERCON®
Allison C-4
Caterpillar TO-2
Ford M2C138-CJ / M2C166-H
General Motors 6297-M
Volvo 97341
ZF TE-ML 04D, 09, 14A, 17C
Not suitable for applications requiring DEXRON®-VI, MERCON® V, MERCON® LV, or CVT/dual-clutch fluids unless specifically approved.
These specifications confirm suitability for a broad range of conventional automatic transmissions, hydraulic systems and power steering units requiring a DEX/MERC type automatic transmission fluid.
Advanced friction modifiers deliver controlled clutch engagement, ensuring smooth gear changes under both light and heavy load conditions. This helps eliminate shift flare, harsh shifting and clutch chatter.
Castrol Transmax ATF DEX/MERC MV resists thermal degradation at elevated operating temperatures, preventing fluid thickening, sludge formation and varnish build-up. This contributes to extended fluid life and cleaner transmissions.
The anti-wear additive system protects critical transmission components including planetary gear sets, bearings and hydraulic valves, reducing metal-to-metal contact and extending component life.
Maintains stable frictional characteristics throughout the service interval, helping transmissions retain consistent performance and reducing the risk of shudder or loss of torque transfer.
Formulated to be compatible with common elastomers and seal materials used in automatic transmissions and power steering systems, helping prevent leaks and seal hardening.
High detergency keeps internal components clean, ensuring smooth hydraulic control and preventing sticking valves or delayed gear engagement.
Suitable for passenger vehicles, light commercial vehicles, trucks, buses and off-highway equipment specifying DEX/MERC fluids, simplifying inventory management for workshops and fleet operators.
In addition to automatic transmissions, this fluid can be used in many power steering systems and hydraulic applications where DEX/MERC type fluids are specified.
Castrol Transmax ATF DEX/MERC MV is recommended for use in:
Conventional automatic transmissions requiring DEXRON®-III or MERCON® fluids
Passenger cars and light commercial vehicles
Heavy-duty trucks and buses (where specified)
Power steering systems requiring ATF-type fluids
Off-highway equipment and industrial machinery specifying TO-2 or DEX/MERC fluids
Older transmission designs where DEX/MERC specifications are required
Always consult the equipment manufacturer’s handbook to confirm the correct fluid specification before use.
| Property | Typical Value |
|---|---|
| Fluid Type | Automatic Transmission Fluid |
| Appearance | Red liquid |
| Density @ 15 °C | ~0.86 g/cm³ |
| Kinematic Viscosity @ 40 °C | ~36 mm²/s |
| Kinematic Viscosity @ 100 °C | ~7.5 mm²/s |
| Viscosity Index | ~180 |
| Pour Point | ~-45 °C |
| Flash Point (COC) | >200 °C |
| Friction Stability | Excellent |
| Oxidation Stability | High |
Typical values only and may vary slightly due to normal manufacturing tolerances.
Store in original sealed containers in a cool, dry, well-ventilated area
Protect from direct sunlight, moisture and contamination
Keep containers tightly sealed when not in use
Use clean dispensing equipment to avoid cross-contamination
Do not mix with other transmission fluids unless compatibility is confirmed
Dispose of used fluid and containers in accordance with local environmental regulations
Shelf life up to 5 years when stored correctly in unopened containers
One fluid for multiple applications reduces inventory complexity
Reliable performance in mixed fleets with older automatic transmissions
Smooth shifting improves driver comfort and vehicle reliability
Extended fluid life reduces service frequency and downtime
Trusted Castrol formulation with proven field performance
Cost-effective 20 L packaging for professional servicing environments
This product hasn't received any reviews yet. Be the first to review this product!
Castrol
Castrol
