Description
SHELL SPIRAX S3 ATF MD3
High Performance Automatic Transmission Fluid (ATF) for Dexron® III, Mercon® & Allison C-4 Applications
Product Description
Shell Spirax S3 ATF MD3 is a premium automatic transmission fluid formulated with high-quality base oils and advanced additive technology to provide reliable performance in automatic transmissions, power steering systems, hydraulic systems, and other applications requiring a Dexron® III-type fluid.
The formulation provides:
- Excellent oxidation stability
- Smooth friction control
- Good wear protection
- Reliable hydraulic performance
- Protection against deposits and sludge formation
Shell Spirax S3 ATF MD3 is designed for vehicles and equipment where GM Dexron® III, Ford Mercon®, or Allison C-4 fluids are specified. It should not be used where newer fluids such as Dexron® VI or Ford Mercon® LV/SP are required.
Features and Benefits
Smooth Transmission Operation
The balanced friction characteristics provide:
- Smooth gear shifting
- Reduced clutch shudder
- Consistent transmission performance
- Improved driving comfort
Excellent Oxidation and Thermal Stability
Provides:
- Resistance to high-temperature degradation
- Reduced varnish and sludge formation
- Longer fluid service life
- Cleaner transmission components
Reliable Wear Protection
The additive system protects:
- Gears
- Bearings
- Hydraulic valves
- Clutch components
- Torque converters
against wear during normal and severe operation.
Good Low-Temperature Performance
Provides:
- Fast oil circulation during cold starts
- Reliable hydraulic response
- Smooth transmission engagement at low temperatures
Effective Corrosion Protection
Protects transmission components against:
- Rust
- Corrosion
- Moisture-related damage
Applications
Shell Spirax S3 ATF MD3 is recommended for:
Automatic Transmissions
- Passenger car automatic transmissions
- Light commercial vehicle transmissions
- Older generation automatic gearboxes
Power Steering Systems
- Hydraulic power steering systems requiring ATF fluid
Hydraulic Applications
- Hydraulic systems requiring Dexron® III-type ATF
Commercial Vehicles
- Trucks
- Buses
- Fleet vehicles requiring Allison C-4 fluids
Specifications & Approvals
Meets or exceeds:
- GM Dexron® III
- Ford Mercon®
- Allison C-4
- Allison TES-389
- MB 236.9
- Voith H55.6335.xx
(Always follow the vehicle manufacturer's lubricant recommendation.)
Typical Physical Characteristics
| Property | Typical Value |
|---|---|
| Fluid Type | Automatic Transmission Fluid |
| Base Oil Type | Mineral Oil |
| Colour | Red |
| Kinematic Viscosity @ 40°C | Approx. 35 mm²/s |
| Kinematic Viscosity @ 100°C | Approx. 7.2 mm²/s |
| Viscosity Index | Approx. 180 |
| Density @ 15°C | Approx. 850 kg/m³ |
| Flash Point | Approx. 200°C |
| Pour Point | Approx. -45°C |
Performance Characteristics
- Premium Dexron® III-type ATF
- Excellent friction stability
- Smooth shift performance
- Good oxidation resistance
- Good anti-wear protection
- Reliable hydraulic operation
- Excellent deposit control
- Suitable for automatic transmissions and hydraulic systems
Storage & Handling
- Store in original sealed containers.
- Protect from moisture, dust, and contamination.
- Store in a cool, dry location away from direct sunlight.
- Keep containers tightly closed when not in use.
Health & Safety
When used as intended and handled according to good industrial hygiene practices, Shell Spirax S3 ATF MD3 presents minimal health risk.
Avoid prolonged skin contact and follow the recommendations provided in the Safety Data Sheet (SDS)
