Engine oil technical data · Amsoil
Amsoil Signature Series 5W-50
Amsoil Signature Series 5W-50 is a 5W-50 engine oil (5W-50). According to the manufacturer's data sheet it has a viscosity of 119.5 mm²/s at 40 °C, 19.4 mm²/s at 100 °C, a viscosity index of 185, HTHS of 4.45 mPa·s, a TBN of 12.5 mg KOH/g and a pour point of −48 °C.
Data sheet ↗ Data verified: 3 Nov 2026
Parameters from the data sheet
| Parameter | Value | Class median 5W-50 |
|---|---|---|
| Viscosity 40 °C | 119.5 mm²/s | 114 mm²/s |
| Viscosity 100 °C | 19.4 mm²/s | 18 mm²/s |
| Viscosity index | 185 | 180 |
| TBN | 12.5 mg KOH/g | 9.6 mg KOH/g |
| CCS −30 °C | 5108 mPa·s | 6155 mPa·s |
| Pour point | −48 °C | −42 °C |
| Flash point | 224 °C | 230 °C |
| Density | not stated | |
| HTHS 150 °C | 4.45 mPa·s | 4.5 mPa·s |
| Sulphated ash | not stated |
All 5W-50 oils → See the class table for a detailed comparison with other oils.
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