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Background image of a piece of paper stamped APPROVED and inset logo for American Petroleum Institute and two oil standards.
Newsby News/Media ReleaseApril 15, 2026

API PC-12 Engine Oil Specification Approved

The API PC-12 heavy-duty engine oil specification has been formally approved and will be incorporated into the Engine Oil Licensing and Certification System (EOLCS) document.

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Blue green background with closeup of oil pouring from bottle, logo for the American Petroleum Institute, and headline PD-12-Update.
Newsby News/Media ReleaseJanuary 7, 2026

American Petroleum Institute Updates the Advancement of API PC-12 Specification

The American Petroleum Institute Lubricants Standards Group (LSG) approved three key actions that will now move to an electronic ballot for inclusion in API 1509 as part of the development of the new Proposed Category 12 (PC-12) heavy-duty engine oil specification.

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Image of oil pouring from a plastic bottle and inset logo for For Gasoline Engines certification.
Newsby News/Media ReleaseAugust 28, 2025

API Licenses Over 1,800 ILSAC GF-7 Engine Oils as New Standard Gains Traction

The American Petroleum Institute (API) has licensed more than 1,800 GF-7 specification motor oil products since March 31.

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Background image of oil pouring into an engine, inset photo of API's Motor Oil Guide.
Newsby News/Media ReleaseJune 17, 2025

API Releases Updated Motor Oil Guide Featuring ILSAC GF-7 Standards

The American Petroleum Institute has released the latest edition of the API Motor Oil Guide, and it includes details on the ILSAC GF-7 motor oils, a new category of motor oil introduced earlier this year.

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Cover of API's Motor Oil Guide featuring a mechanic working under the hood of a car, with text stating "The Next Generation of Gasoline Engine Oil Is Here" and API certification symbols for gasoline.
Newsby News/Media ReleaseJune 17, 2025

API Releases Updated Motor Oil Guide Featuring ILSAC GF-7 Standards

API releases its updated Motor Oil Guide featuring ILSAC GF-7 standards, offering better fuel economy, engine protection, and performance for modern vehicles.

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Image showing a DEF sign and inset logo for the American Petroleum Institute.
Newsby News/Media ReleaseFebruary 20, 2025

New Resource Page Provides Insights on Purchasing and Storing DEF

The American Petroleum Institute has launched a new page on its website to provide vital information about diesel exhaust fluid (DEF) related to purchasing and storage.

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ArticlesApril 26, 2024

How to Purchase, Store & Handle Diesel Exhaust Fluid

Diesel engine vehicles can be damaged by using low quality diesel exhaust fluid (DEF). Repairs can be very expensive with long downtime possible, and damage could void the manufacturer’s warranty.

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Newsby StaffOctober 13, 2023

Tips for Optimal Performance for Diesel-Powered Pickups

We have tips on how to ensure the best performance of your diesel-powered pickup trucks by API.

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ArticlesApril 24, 2023

How to Check and Maintain Your Diesel Exhaust Fluid

If the diesel exhaust fluid has been stored in the vehicle over the past 12 months, the American Petroleum Institute recommends that it be drained and replaced.

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Newsby StaffJune 6, 2019

Engine Oil Standards Improve

API announced the approval of improved performance standards for engine oils that will provide greater protection and fuel efficiency for today’s gasoline-engine-powered trucks and cars.

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