Vehicle Compatibility
This is a full synthetic engine oil selected by specification. Use only where the manufacturer specifies SAE 5W-40 viscosity and ACEA A3/B3 and/or ACEA A3/B4, with API SN (petrol) and/or API CF (diesel) as required. Confirm the required viscosity and specifications in your owner's manual before servicing or topping up.
- Use where ACEA A3/B3 is specified
- Use where ACEA A3/B4 is specified
- For petrol engines requiring API SN
- For diesel engines requiring API CF
- Use where SAE 5W-40 engine oil is specified
Do not substitute if your vehicle requires an ACEA "C" category oil (for example C3), a specific OEM approval, or a different viscosity grade.
Specifications
| Brand | Castrol |
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| Product | Castrol Magnatec |
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| Product Type | Engine Oil |
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| Oil Type | Full Synthetic Oil |
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| Capacity | 5 L |
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| SAE Viscosity Grade | 5W-40 |
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| ACEA Specification | A3/B3, A3/B4 |
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| API Specification | SN, CF |
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| SKU | 3435691 |
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Features
- Full synthetic 5W-40 engine oil for engines specifying this viscosity
- Meets ACEA A3/B3 and ACEA A3/B4 where these specifications are required
- Meets API SN for compatible petrol engine requirements
- Meets API CF for compatible diesel engine requirements
- 5L service-size bottle for routine maintenance (confirm your engine oil capacity)
Why Buy From Us
- Local South African stock
- 12-month warranty (manufacturing defects)
- Spec-check support available if you share your vehicle make, model, year, and engine
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Confirm the correct viscosity and spec (ACEA/API/OEM) in your owner's manual before use
- Replace the oil filter at every service where applicable
- Fill to the correct level and re-check after running the engine briefly
- Avoid mixing oil grades/specs unless the manufacturer allows it
- Dispose of used oil responsibly at an approved recycling facility
