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 ...

It’s not rocket science to split an API oil-service category. But it takes lots of chemical engineering to develop and bring to market not one, but two, new heavy-duty motor oil specs in a mere five ...

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 ...

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 ...

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 ...

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 ...

The most current API SN oil category for gasoline engine oils are soon to be superseded by new gasoline engine oil standard aimed at providing greater protection and fuel efficiency for today’s ...