API PC-12 engine oil categories CL-4 and FB-4 are advancing toward a 2027 launch. Here’s what the changes mean for fleets, ...

The American Petroleum Institute (API) says it has licensed approximately 400 CK-4 oils and more than 60 FA-4 oils submitted by marketers, making the robust new classifications available to operators ...

The American Petroleum Institute (API) announced progress in the development of its new Proposed Category 12 (PC-12) ...

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

API expects availability to grow substantially over the next few years as more oil marketers add oils meeting the new standards to their product lines The American Petroleum Institute (API) has ...

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

Preparing for EPA 2027? API’s new PC-12 spec (CL-4 and FB-4) introduces ultra-low viscosity 0W-20 oils and stricter emissions ...

On Thursday, Dec. 1, the American Petroleum Institute’s (API) new diesel engine oil standards, API CK-4 and FA-4, will begin appearing in the marketplace on licensed products and marketing materials.