Technical Conclusion:
The analysis of Kerax 0W-30 WSS-M2C950-A oil indicates significant deficiencies in viscosity performance, particularly highlighted during the SSI (Shear Stability Index) test.
Key Points:
- Viscosity Drop Below Standard:
- Measured Value: 8.956 cSt (centistokes)
- Standard Requirement: Minimum viscosity of 9.3 cSt for 0W-30 oils
- Analysis: The viscosity falling below 9.3 cSt after the SSI test signifies inadequate shear stability. Shear stability is crucial for maintaining viscosity under mechanical stress, such as high engine speeds and loads.
- Impact on Engine Protection:
- Reduced Protection: Insufficient viscosity may lead to inadequate lubrication, particularly at high temperatures or under heavy loads. This condition increases metal-to-metal contact within the engine, resulting in accelerated wear, higher friction, and potential engine damage.
- Potential for Oil Breakdown: A lower viscosity compromises the oil’s protective film, diminishing its capacity to safeguard critical engine components from wear, corrosion, and deposits.
- Non-Compliance with WSS-M2C950-A Specification:
- The WSS-M2C950-A specification, mandated by Ford for certain vehicles, imposes strict requirements for oil performance, including viscosity retention. Failure to meet these criteria implies that the oil does not offer the necessary protection for engines requiring this specification, potentially voiding warranties.
Consequences for Buyers:
- Increased Engine Wear: The reduced viscosity indicates that the oil may not provide sufficient lubrication under high-stress conditions, leading to accelerated engine wear, reduced efficiency, and potential component failures over time.
- Warranty Risks: Using oil that fails to meet WSS-M2C950-A standards in vehicles requiring this specification could result in warranty issues. If engine damage occurs due to insufficient lubrication, warranty claims may be denied.
- Oil Performance Issues: The compromised viscosity impacts the oil’s ability to maintain a stable protective film, raising the risk of oil thinning, higher engine temperatures, and potential breakdown under stress.
Conclusion:
Kerax 0W-30 WSS-M2C950-A oil, with its viscosity reduction after the SSI test, does not meet the minimum requirements for 0W-30 oils and fails to comply with the WSS-M2C950-A specification. This deficiency can lead to insufficient engine protection, increased wear, and potential warranty issues for vehicles relying on this specific oil standard. For optimal engine performance and protection, it is recommended to select oil that maintains viscosity within the specified range.