API PC-12 oil specification approved with CL-4 and FB-4 marks available ahead of 2027 licensing and new engine oil performance standards.
API Service Category CL-4 and API FB-4 'Donut' certification marks enable oil marketers to align with 2027 heavy-duty engine standards.
Heavy-duty engine oil marketers can begin finalizing formulations and preparing product packaging to meet the new oil ...
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