what is the difference between wssm2c961-a and wssm2c961-a1 motor oil

Natasha willow

2 min read

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16-01-2025

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The subtle difference between WS-SM2C961-A and WS-SM2C961-A1 motor oil lies in their specifications and potentially, their formulation. While both likely originate from the same manufacturer and share a similar base, the "A1" designation suggests a revision or an updated version. Unfortunately, without access to the manufacturer's specifications, pinpointing the exact differences is impossible. The information available publicly is often limited.

Understanding the Naming Convention

The alphanumeric code (WS-SM2C961-A and WS-SM2C961-A1) itself offers little insight into the oil's properties. These codes are likely internal part numbers or designations used by the manufacturer. They don't adhere to standardized industry naming conventions like SAE viscosity grades (e.g., 5W-30, 10W-40) or API service classifications (e.g., SN, SP).

To understand the difference, we need to look beyond the manufacturer's internal code and consider these possibilities:

1. Revised Formulation:

The most probable difference is a reformulation. WS-SM2C961-A1 could represent an improved version of WS-SM2C961-A. This could involve:

• Enhanced Additives: Improved detergents, dispersants, anti-wear agents, or other additives could result in better performance, longer oil life, or improved engine protection.
• Base Oil Changes: The type or blend of base oils might have changed, leading to variations in viscosity, pour point, or other physical properties.
• Meeting New Standards: WS-SM2C961-A1 might meet updated industry specifications or internal quality control standards not satisfied by its predecessor.

2. Minor Packaging or Labeling Changes:

A less significant difference could simply be related to packaging or labeling updates. The manufacturer may have changed the container, label design, or even the safety data sheet (SDS) associated with the product, resulting in a new part number.

3. Regional Variations:

In some cases, the "A1" designation might reflect a product variation tailored to specific regional or market requirements. This might involve adjustments to meet particular environmental regulations or fuel specifications.

How to Find Definitive Answers

To definitively determine the differences, you should:

• Consult the Manufacturer's Datasheets: The most reliable source of information is the manufacturer's official product data sheets or specifications. Look for these on the manufacturer's website or contact their technical support department.
• Compare Safety Data Sheets (SDS): SDS documents detail the chemical composition and hazard information of the oils. Comparing the SDS for both products might reveal differences in formulation.
• Check for Viscosity and API/ILSAC Grades: If the manufacturer's documentation includes this information, compare the viscosity grade (e.g., 5W-30) and any API or ILSAC performance certifications. These classifications provide standardized measures of oil quality.

In conclusion, without access to the manufacturer's specifications, drawing a firm conclusion about the differences between WS-SM2C961-A and WS-SM2C961-A1 is impossible. The most likely explanation is a revised formulation with minor or significant improvements. Always consult the manufacturer's documentation for precise details.