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's new diesel engine oil-service categories, API CK-4 and FA-4, will begin appearing in the marketplace on December 1. New API Donuts denoting the categories will ...

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.

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 ...

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

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 ...

The new API CK-4 oils deliver many benefits that directly address major issues with off-road equipment, including extended drain intervals, reduced engine wear and ability to extend engine rebuild ...

API CK-4 and FA-4 diesel engine oils have been available for nearly two years, but with several combinations of categories and viscosities available, it can be difficult to decide which best fits your ...

The American Petroleum Institute will introduce a special Service Symbol Donut to help consumers identify the newly-approved FA-4 (PC-11) diesel engine oil. API approved two new diesel oil standards, ...

A new generation of heavy-duty diesel engine oil is headed our way in the next 12 to 18 months. Known currently as PC-12, or Proposed Category 12, the oils under development through the American ...