Engine oil technical data · Castrol
Castrol MAGNATEC DIESEL 10W-40 B4
Castrol MAGNATEC DIESEL 10W-40 B4 is a 10W-40 engine oil (ACEA A3/B4 · API SP). According to the manufacturer's data sheet it has a viscosity of 98 mm²/s at 40 °C, 14.4 mm²/s at 100 °C, a viscosity index of 152, a pour point of −36 °C and sulphated ash of 1.1 %.
Data sheet ↗ Data verified: 3 Nov 2026
Parameters from the data sheet
| Parameter | Value | Class median 10W-40 |
|---|---|---|
| Viscosity 40 °C | 98 mm²/s | 96.8 mm²/s |
| Viscosity 100 °C | 14.4 mm²/s | 14.3 mm²/s |
| Viscosity index | 152 | 154 |
| TBN | not stated | |
| CCS −25 °C | 6396 mPa·s | 6460 mPa·s |
| Pour point | −36 °C | −36 °C |
| Flash point | 203 °CMeasured in a closed cup (PMCC), so lower than the COC values in the other rows. | 226 °C |
| Density | 0.869 g/cm³ | 0.869 g/cm³ |
| HTHS 150 °C | not stated | |
| Sulphated ash | 1.1 % | 1.3 % |
All 10W-40 oils → See the class table for a detailed comparison with other oils.
Specifications and approvals
- Specification
- ACEA A3/B4 · API SP
- Approvals and recommendations
- VW 501 01/505 00; Fiat 9.55535-D2
Same oil, different name
Identical lab values to: Castrol Magnatec 10W-40
Similar oils
Oils in the 10W-40 class with the closest parameters and the same specification.
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