Product Description

Shell Spirax S4 AX 80W-90 is a premium mineral-based, multi-grade extreme pressure (EP) gear oil engineered for heavy-duty automotive axles, hypoid differentials, final drives, manual transmissions, transfer cases, and steering mechanisms operating under severe service conditions. Formulated with high-quality mineral base oils and an advanced sulphur-phosphorus EP additive system, it provides outstanding protection against wear, scuffing, oxidation, and corrosion while maintaining excellent performance over a wide temperature range. It is suitable for passenger cars, commercial vehicles, buses, trucks, agricultural machinery, and construction equipment requiring an API GL-5 SAE 80W-90 gear lubricant.

Features and Benefits

Outstanding Extreme Pressure Protection

The advanced EP additive technology delivers excellent protection against:

• Heavy loads
• Shock loading
• Gear tooth wear
• Scuffing
• Surface fatigue

ensuring extended service life for gears and bearings under severe operating conditions.

Excellent Thermal & Oxidation Stability

Shell Spirax S4 AX 80W-90 provides:

• High resistance to thermal degradation
• Reduced sludge and deposit formation
• Cleaner gear components
• Longer lubricant service life

maintaining reliable performance even at operating temperatures approaching 150°C.

All-Season Performance

The multi-grade SAE 80W-90 formulation offers:

• Good low-temperature flow
• Reliable cold-start lubrication
• Stable viscosity at high operating temperatures
• Year-round protection without seasonal oil changes

Excellent Wear & Corrosion Protection

Provides reliable protection against:

• Rust
• Corrosion
• Moisture contamination
• Bearing wear
• Gear tooth pitting

helping maximise drivetrain reliability and service life.

Potential Fuel Economy Benefits

The multigrade formulation helps reduce frictional losses within the drivetrain, contributing to improved mechanical efficiency compared with conventional monograde gear oils.

Applications

Shell Spirax S4 AX 80W-90 is recommended for:

Automotive Driveline Systems

• Hypoid differentials
• Drive axles
• Final drives
• Transfer cases
• Steering gearboxes

Manual Transmissions

Suitable for selected manual transmissions where an API GL-4 or GL-5 SAE 80W-90 lubricant is specified by the manufacturer.

Commercial & Off-Highway Equipment

• Trucks
• Buses
• Agricultural machinery
• Construction equipment
• Earthmoving machinery
• Heavy-duty industrial vehicles

Specifications & Approvals

Meets or exceeds:

• API GL-4
• API GL-5
• API MT-1
• SAE J2360
• Mack GO-H
• Mack GO-J
• Dana Approved
• MIL-PRF-2105E (obsolete specification)
• MIL-L-2105D (obsolete specification)

Typical Physical Characteristics

Performance Characteristics

• Premium multi-grade axle gear oil
• Mineral-based formulation
• API GL-5 and GL-4 performance
• Excellent EP protection
• Outstanding load-carrying capability
• Superior thermal and oxidation stability
• Excellent wear protection
• Reliable rust and corrosion resistance
• Suitable for hypoid gears and final drives
• Year-round all-season performance

Compatibility

Shell Spirax S4 AX 80W-90 is suitable for axles, final drives, and selected manual transmissions requiring an API GL-4 or API GL-5 SAE 80W-90 lubricant.

For optimum performance:

• Do not use in applications requiring limited-slip differential fluids unless specifically approved by the equipment manufacturer.
• Avoid mixing with incompatible gear lubricants.
• Follow the OEM's recommended lubricant specifications and drain intervals.

Storage & Handling

• Store in original sealed containers.
• Protect from water, dust, and direct sunlight.
• Store in a cool, dry location.
• Keep containers tightly closed when not in use.

Health & Safety

When used as intended and handled in accordance with good industrial hygiene practices, Shell Spirax S4 AX 80W-90 is not expected to present significant health or environmental hazards. Avoid prolonged skin contact with used oil and consult the relevant Safety Data Sheet before use.