Description
Product Description
Shell Spirax S2 ALS 90 is a premium mineral-based SAE 90 axle lubricant specially formulated for limited slip differentials (LSDs), hypoid drive axles, and heavily loaded final drive gear systems. It combines high-quality mineral base oils with a friction-modified Extreme Pressure (EP) additive package to provide excellent wear protection, thermal stability, corrosion resistance, and the controlled friction characteristics required by limited slip differentials. It is suitable for passenger cars, light commercial vehicles, buses, trucks, agricultural equipment, and construction machinery fitted with LSD axles.
Features and Benefits
Optimised for Limited Slip Differentials
The specially balanced friction modifier system provides:
- Smooth and quiet limited slip differential operation
- Reduced clutch plate chatter
- Reliable torque transfer
- Excellent compatibility with clutch-type LSD units
Suitable wherever an API GL-5 Limited Slip lubricant is specified.
Excellent Extreme Pressure Protection
The EP additive system delivers outstanding protection against:
- Gear tooth wear
- Scuffing
- Heavy shock loads
- Hypoid gear damage
- Surface fatigue
Helping extend axle and differential service life.
High-Quality Mineral Base Oils
Premium mineral oils provide:
- Stable lubricating film
- Good oxidation resistance
- Reliable viscosity retention
- Effective high-temperature protection
Excellent Corrosion & Rust Protection
Protects steel and bearing surfaces against:
- Rust
- Moisture contamination
- Corrosion during storage
- Condensation
while helping maintain differential cleanliness.
Reliable Thermal Stability
The formulation resists:
- Oxidation
- Oil thickening
- Deposit formation
- Thermal degradation
providing dependable performance under demanding operating conditions.
Applications
Shell Spirax S2 ALS 90 is recommended for:
Automotive Drivelines
- Limited slip differentials (LSD)
- Hypoid drive axles
- Rear drive axles
- Final drives
Commercial Vehicles
- Trucks
- Buses
- Heavy-duty trailers
Off-Highway Equipment
- Construction machinery
- Agricultural equipment
- Earthmoving machinery
It may also be used in other moderately to heavily loaded gear sets where a friction-modified API GL-5 gear oil is specified.
Specifications
Meets or exceeds:
- API GL-5 Limited Slip
- SAE J306 – SAE 90
For OEM-specific approvals, consult the equipment manufacturer or Shell Technical Helpdesk.
Typical Physical Characteristics
| Property | Typical Value | Test Method |
|---|---|---|
| SAE Viscosity Grade | 90 | SAE J306 |
| Base Oil Type | Mineral Oil | — |
| Density @ 15°C | 909 kg/m³ | ISO 12185 |
| Kinematic Viscosity @ 40°C | 155 mm²/s | ISO 3104 |
| Kinematic Viscosity @ 100°C | 15.0 mm²/s | ISO 3104 |
| Viscosity Index | 96 | ISO 2909 |
| Flash Point (COC) | 210°C | ISO 2592 |
| Pour Point | -18°C | ISO 3016 |
Performance Characteristics
- Premium mineral axle lubricant
- API GL-5 Limited Slip performance
- Friction-modified for LSD applications
- Excellent EP protection
- High wear resistance
- Good oxidation stability
- Reliable corrosion protection
- Suitable for hypoid gears
- Stable lubrication under heavy loads
- Smooth limited slip differential performance
Storage & Handling
- Store in original sealed containers.
- Keep in a cool, dry location away from direct sunlight.
- Prevent contamination by water, dirt, and dust.
- Keep containers tightly closed when not in use.
Health & Safety
When used as intended and handled with good industrial hygiene practices, Shell Spirax S2 ALS 90 presents no significant health risk. Avoid prolonged skin contact with used oil and consult the Safety Data Sheet for detailed handling guidance.
