January 1, 2027, will be the first license date for two new heavy-duty engine oil categories, if all goes as planned.

The API is aiming for a 2027 rollout of the new engine oil spec, which is meant to enhance performance standards.

The Engine Manufacturers Association (EMA) made a request earlier this year to the Diesel Engine Oil Advisory Panel (DEOAP) of the American Petroleum Institute (API) to initiate development of a new ...

New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature lower viscosity, improved thermal resistance, and possibly longer oil drain ...

Engine oil is the lifeblood of an engine, directly influencing its longevity, efficiency, and performance. Yet many drivers remain unsure about what those numbers and letters—like 0W-20 or API ...