Vehicle Compatibility
This product is an axle and differential gear oil selected by specification. Use only where the manufacturer specifies SAE 80W-90 and API GL-5 axle/differential oil. Confirm the required viscosity grade and GL rating in your owner's manual before servicing or topping up.
- For axle drives and differentials requiring API GL-5
- Suitable for driveline units specifying SAE 80W-90 gear oil
- Listed as Axle EPX for applications requiring an EP axle oil (confirm spec)
- 5L service size suited to refills and routine maintenance
If your vehicle has a limited-slip differential, confirm whether a dedicated LS oil or additive is required. Do not use where GL-4 or an OEM-specific fluid is specified.
Specifications
| Brand | Castrol |
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| Product | Castrol Transmax |
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| Information | Axle EPX |
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| Fluid Type | Axle / Differential Gear Oil |
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| Capacity | 5 L |
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| SAE Viscosity Grade | 80W-90 |
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| API Specification | GL-5 |
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| SKU | 3428951 |
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Features
- API GL-5 extreme-pressure gear oil for compatible axle and differential applications
- SAE 80W-90 viscosity grade suited to driveline units specifying this gear oil
- Axle EPX positioning for applications requiring an EP axle oil (confirm spec/approval)
- 5L service-size container for workshop and routine maintenance use
Why Buy From Us
- Local South African stock
- 12-month warranty (manufacturing defects)
- Spec-check support available if you share your make, model, and whether it's diff, axle, or transfer case use
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Confirm your driveline unit requires GL-5 and 80W-90 before use
- Clean around fill and drain plugs before opening to prevent contamination
- Fill to the manufacturer's specified level only (avoid overfilling)
- If your vehicle has a limited-slip differential, confirm LS requirements before filling
- Dispose of used oil responsibly at an approved recycling facility
