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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

The most current API SN oil category for gasoline engine oils are soon to be superseded by new gasoline engine oil standard aimed at providing greater protection and fuel efficiency for today’s ...

Work on creating the next heavy-duty diesel engine oil standard-- known in its current, embryonic form as Proposed Category 11-- is running on schedule to meet the planned “delivery” of new lubricants ...