American Petroleum Institute (API)

The American Petroleum Institute (API) represents all aspects of America’s oil and natural gas industry, having more than 625 corporate members from all segments of the industry, from the largest major oil companies to the smallest of independents. These include producers, refiners, suppliers, marketers, pipeline operators and marine transporters, as well as service and supply companies that support all segments of the industry.

For consumers, API provides the API’s Engine Oil Licensing and Certification System (EOLCS). It is a voluntary licensing and certification program that authorizes engine oil marketers who meet specified requirements to use the API Engine Oil Quality Marks. These emblems go directly on each container of oil that retains the certification for and is there to help consumers identify quality engine oils for their gasoline- and diesel-powered vehicles.

The API engine oil specifications are used throughout the world and also used by many OEMs as the baseline performance upon which their own performance requirements are built.

Why Fleets Should Have Confidence in FA4_L

Why Fleets Should Have Confidence in FA-4

January 26, 2022

The heavy-duty diesel marketplace should have the confidence to make a widespread shift toward lower-viscosity lubricants. Here’s why. 

Meeting Emissions Targets Isn't Getting Easier

January 01, 2022

The trucking industry is entering Phase 2 of the U.S. EPA's new greenhouse gas emissions and fuel efficiency standards, pushing OEM's to meet increasingly stringent targets. 

ACEA 2022 Heavy-Duty: Understanding the Tests - The Volvo T-13 Engine Test

November 01, 2021

The Volvo T-13 Engine Oil Oxidation test (ASTM D8048) is a diesel lubricant performance requirement included within the ACEA 2022 Heavy-Duty Engine Oil Sequences upgrade.

ACEA 2021 Heavy-Duty: Overview of Proposed Changes video

ACEA 2021 Heavy-Duty: Overview of Proposed changes (Video)

August 25, 2021

Proposed changes to the European Automobile Manufacturers' Association's (ACEA) Heavy-Duty Oil Sequences are discussed in this video.

How Lubricant Choice Can Contribute to Your Sustainability Goals

How Lubricant Choice Can Contribute to Your Sustainability Goals

July 26, 2021

As OEMs look to move cleaner—spurred by internal goals and governmental regulations—there is opportunity to improve efficiency via engine oil specification.

Here's How Your Choice of Engine Oil Can Impact Your Bottom Line

May 21, 2021

Originally published in Fleet Equipment Magazine, this article discusses how switching to lower-viscosity lubricants can improve fleetwide fuel economy while providing robust protection.