API has approved two new diesel oil standards and labels to match as refiners seek to meet OEM demands for the latest in engine protection and emission target compliance.
A pair of new diesel oil service categories from the American Petroleum Institute have been designated, and should be available by December of this year. Of particular immediate interest to farm equipment operators is the new CK-4 designation, which will supplant the long-running CJ-4 service category for diesel engine oil.
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