Engine oil technical data · Castrol
Castrol MAGNATEC Stop-Start 5W-20 E
Castrol MAGNATEC Stop-Start 5W-20 E is a 5W-20 engine oil (API SN · ILSAC GF-5). According to the manufacturer's data sheet it has a viscosity of 44 mm²/s at 40 °C, 8.2 mm²/s at 100 °C, a viscosity index of 166, a pour point of −45 °C and sulphated ash of 0.8 %.
Data sheet ↗ Data verified: 4 Nov 2026
Parameters from the data sheet
| Parameter | Value | Class median 5W-20 |
|---|---|---|
| Viscosity 40 °C | 44 mm²/s | 44 mm²/s |
| Viscosity 100 °C | 8.2 mm²/s | 8.1 mm²/s |
| Viscosity index | 166 | 158 |
| TBN | not stated | |
| CCS −30 °C | 3450 mPa·s | 5600 mPa·s |
| Pour point | −45 °C | −39 °C |
| Flash point | 210 °CMeasured in a closed cup (PMCC), so lower than the COC values in the other rows. | 230 °C |
| Density | 0.847 g/cm³ | 0.85 g/cm³ |
| HTHS 150 °C | not stated | |
| Sulphated ash | 0.8 % | 0.8 % |
All 5W-20 oils → See the class table for a detailed comparison with other oils.
Specifications and approvals
- Specification
- API SN · ILSAC GF-5
- Approvals and recommendations
- Ford WSS-M2C948-B
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