American Petroleum Institute (API) announced the approval of improved performance standards for engine oils that will provide greater protection and fuel efficiency for today’s gasoline-engine ...

To combat counterfeiters API maintains a list of unauthorized engine oil on its website and provides details and images to alert consumers to oils that falsely claim to be licensed by API.

If you've ever bought a quart of motor oil for your vehicle, you've likely encountered the letters API somewhere on the label. In fairness, there are a lot of abbreviations, symbols and odd number ...

API CI-4 oils are pivotal components in maintaining diesel engine durability using cooled EGR. API CI-4 is a higher quality oil than the previous diesel oil categories, so it will provide engine ...

Gen III then submitted its first Group III based 5 W-30 PCMO formulation and ReGen III product to API’ s Engine Oil Licensing and Certification System.