The American Petroleum Institute's new diesel engine oil-service categories, API CK-4 and FA-4, will begin appearing in the marketplace on Dec. 1. API has developed two visually different API Service ...

The new heavy-duty engine oil category, PC-12, is nearing the finish line. Here’s what fleet maintenance managers should know before it arrives in 2027.

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 ...

Two new diesel engine oil categories, replacing the oils used in diesel engines for over a decade, came to market in January, capping a development period nearly five years in the works. The roll out ...

A new heavy-duty engine oil specification designed to support next-generation diesel engines is nearing completion and ...

With a fleet to manage and a bottom line to protect, you don’t always have time to research things like the new API FA-4 diesel engine oil category. As we approach the second anniversary of first ...

With the transition to the new API CK-4 and FA-4 oil categories, one of the challenges is figuring out the right oils for your application. CK-4 oils, for example, are designed for both newer engines ...

Modern engine design and the need to reduce CO2 emissions have led to the development of additional engine oil categories and a growing number of engine oil viscosity grades for diesel engines. In ...