Description
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 |
|---|---|
| Product | Castrol Magnatec |
| Product Type | Engine Oil |
| Oil Type | Full Synthetic Oil |
| Capacity | 5 L |
| SAE Viscosity Grade | 5W-40 |
| ACEA Specification | A3/B3, A3/B4 |
| API Specification | SN, CF |
| SKU | 3435691 |
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
Important: Product information, kit contents and compatibility are provided as a guide and may contain errors or omissions. Please verify that this part and any included components are correct for your vehicle before installation. For full details see our Website Disclaimer (Errors & Omissions).

