- Published: Monday, 07 November 2016 08:06
- Written by E&MJ News
By Brian Humphrey
Next month will see the introduction of API CK-4 and API FA-4—a development that represents the biggest industry overhaul in heavy-duty engine oil specifications for decades. Driven by changes in environmental policy and the need to support the rapid development of heavy-duty vehicle technology, the specifications set a new standard for diesel engine lubricants.