American Petroleum Institute (API)Company DetailsContacthttps://www.api.org/Articles & NewsEngine OilAPI Announces Improved Engine Oil StandardsThe new standards are designed to provide greater protection and fuel efficiency for gasoline-engine-powered vehicles.Engine OilNew API CK-4 and FA-4 Oil Specifications Set to be ReleasedThe new API CK-4 and FA-4 diesel engine oil standards address needs of aging, new and in-use engines, as well as help diesel engine manufacturers meet increasing emissions requirements.Request More InformationFill out the form below to request more information about American Petroleum Institute (API)