Technical Conclusion:

The oil exhibits significant deficiencies in meeting the standards required for its classification as a 0W-30 grade, particularly concerning its pour point and viscosity after the SSI test.

1. Pour Point:

   • Measured Value: -39°C
   • Standard Requirement: ≤ -40°C for 0W-30 oils

   Analysis:
   The pour point of -39°C raises concerns regarding the oil’s classification as a 0W-30. For proper flow at low temperatures, the oil must pass the MRV (Mini-Rotary Viscometer) test at -40°C. Given the current pour point, it is unlikely the oil would perform adequately under these conditions, suggesting it may be more appropriate for classification as a 5W-30.

2. Viscosity After SSI Test:
   • Measured Value: 9.19 cSt
   • Standard Requirement: ≥ 9.3 cSt for 0W-30 oils

   Analysis:
   The viscosity of 9.19 cSt after the SSI (Shear Stability Index) test falls below the minimum required threshold. This drop indicates insufficient shear stability, resulting in thinning under mechanical stress, which compromises engine protection during high loads and speeds.

3. Compliance with WSS-M2C950-A Specification:

   Analysis:
   The WSS-M2C950-A specification emphasizes viscosity stability under stress, and the observed drop in viscosity raises concerns about compliance. Using this oil in vehicles requiring this specification may result in warranty issues if engine damage occurs due to inadequate lubrication, potentially leading to denied claims related to engine performance.

Conclusion:

While the Aztec Torotec FMC 0W-30 WSS-M2C950-A oil demonstrates commendable low-temperature performance with a pour point of -39°C, its viscosity after the SSI test does not meet the necessary threshold of 9.3 cSt. This deficiency indicates a risk of inadequate protection under high-stress conditions, which could contribute to increased engine wear. Buyers should exercise caution when using this oil in vehicles requiring the WSS-M2C950-A specification, as it may not fully comply with the viscosity stability requirements, leading to potential engine protection and warranty concerns.