Next generation, API-certified diesel engine oils officially debut


Sources: American Petroleum Institute, Washington, D.C.; CP staff

Lubricant producers can begin marketing two new American Petroleum Institute-licensed categories, CK-4 and FA-4. Soon to be referenced in on- and off-road diesel engine manufacturer specifications, they exhibit improved shear stability, oxidation resistance and aeration control properties against the API CJ-4 formulations they succeed. The API Lubricants Group developed the categories’ performance thresholds and testing guidelines to a) meet the varying needs of aging, new and in-service power packages; and, b) help on- and off-road engine manufacturers address more stringent regulations.

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