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Petroleum Institute Updates Bulk Oil Procedures

22 November 2021

The American Petroleum Institute (API) has announced the publication of the second edition of API 1525A – Bulk Engine Oil Chain of Custody and Quality Documentation.

The publication provides procedures for managing the bulk engine oil chain of custody to ensure oil quality from the point of manufacture to installation in a consumer’s engine. Updates have been made due to modernization of supply chain processes and alignment of the standard with the current edition of NIST 130 – Uniform Laws and Regulations in the Areas of Legal Metrology and Fuel Quality.

All parties involved in the supply of bulk finished motor oil to consumers have a role to play in protecting oil quality throughout the supply chain. Responsibility for quality begins with the oil manufacturer or distributor and ends with the installer. The mixer, transporter / distributor and installer who originally ordered the product have a role to play in ensuring that the quality of the engine oil received matches the quality ordered. API 1525A, provided free of charge here, describes the requirements for each of these roles to ensure that engine oil quality is maintained.

The procedures specifically address several topics.

  • Marketing / blending practices that include the implementation of a quality monitoring and testing system to enable identification and ensure compliance with the claimed API service category for each lot of engine oil delivered to distributors and to installers,
  • The importance of correct ordering and receipt of bulk engine oils and proper chain of custody documentation that identifies bulk engine oil throughout the supply system,
  • Requirements for informing consumers about the types of engine oil available for installation and notification requirements (written and / or electronic) of oil installed in engines.

“Petroleum traders, distributors and motor oil installers who use API 1525A and are committed to providing API licensed motor oils will ensure consumers are always receiving high quality oil,” said Jeffrey Harmening , Senior Director of API. “Oils meeting API specifications will provide the protection required for today’s modern engines and allow them to perform optimally and efficiently, which in turn reduces their carbon footprint.”

API 1525A forms the basis of the Motor Oil Matters (MOM) API. The program authorizes oil change locations and provides benefits to installers and their customers. MOM approved oil change sites and distributors certify that they meet the requirements set out in API 1525A.

Approved sites are committed to distributing oils that meet API performance standards and allow API to sample their oils in bulk as part of the aftermarket API audit program, ensuring they pay the oil as directed to their customers. Licensed installers and distributors also adhere to chain-of-custody regulations in the NIST 130 manual, as adopted annually by the National Conference on Weights and Measures. You can find information about all the benefits of MOM at

Source: API

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