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, compatibility, and planning.

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 ...

It’s an advanced, next-generation engine oil standard focusing on ultra-low viscosity oils for modern engines. When purchasing oil, look for the API Service Symbol "Donut" on the label, which is an ...

Three years from now, you'll see a new API diesel engine oil-service category, designed to help meet federal greenhouse gas/fuel economy standards, which have a final phase-in date set for model year ...

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 (API) announced progress in the development of its new Proposed Category 12 (PC-12) heavy-duty engine oil specification, clearing several key steps toward formal ...

As the trucking industry moves toward the next generation of diesel engines, the introduction of new oils designed to further enhance fuel efficiency also is on the horizon. The upcoming PC-12 ...