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Understanding API and ACEA Certifications: The Global Benchmarks for Lubricant Quality

Published on 2026-03-28

Understanding API and ACEA Certifications: The Global Benchmarks for Lubricant Quality

In the global lubricant market, API and ACEA certifications are the two most widely recognized quality standard systems. For OEM clients and distributors, understanding these certifications is essential. What is API Certification? API (American Petroleum Institute) certification is the most authoritative lubricant classification standard in North America. Gasoline engine oils use the "S" series (such as SP, SN Plus, SN), while diesel engine oils use the "C" series (such as CK-4, CJ-4). The latest gasoline engine oil standard is API SP, released in 2020, which focuses on improvements in: - Low-Speed Pre-Ignition (LSPI) protection - Timing chain wear protection - High-temperature deposit control - Fuel economy enhancement What is ACEA Certification? ACEA (European Automobile Manufacturers' Association) certification is the primary standard for the European market. Its classification system includes: - A/B category: Gasoline and light-duty diesel engines - C category: Engines with aftertreatment devices (DPF/GPF compatible) - E category: Heavy-duty diesel engines ACEA standards are generally more stringent than API, particularly in shear stability, evaporation loss, and cleanliness requirements. Key Differences Between API and ACEA API standards focus on North American market needs with test conditions based on American vehicle models, while ACEA standards target European markets addressing the specific demands of European high-performance engines. Many globally marketed lubricant products meet both sets of standards simultaneously. How to Choose the Right Certification Level? The choice depends on your target market: - Exporting to North America, Middle East, Southeast Asia: Prioritize API certification - Exporting to Europe, North Africa: ACEA certification required - Targeting global markets: Recommended to have both API and ACEA dual certification Xuyuan Energy's products cover the complete certification spectrum from API SN to SP and ACEA A3/B4 to C5, helping clients meet regulatory requirements across different global markets.