Technical Conclusion:
The Shell HELIX ULTRA 5W-20 WSS-M2C948-B oil fails to meet the expected standards due to the following key issue:
- Total Base Number (TBN):
- The oil has a TBN of 7.56, which is below the minimum threshold of 8 for modern oils. This suggests that the oil is not optimal for newer vehicles and is more suitable for older vehicles that require oils meeting ACEA-2008 or ACEA-2004 specifications.