Heavy-duty engine oil marketers can begin finalizing formulations and preparing product packaging to meet the new oil ...

The American Petroleum Institute (API) announced that the new PC-12 heavy-duty engine oil category has been formally approved ...

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.

It’s an advanced, next-generation engine oil standard focusing on ultra-low viscosity oils for modern engines. When purchasing oil, look for the API Service Symbol "Donut" on the label, which is an ...

PC-12 has been fully approved by API and will replace CK-4 and FA-4 engine oils starting in 2027. The new engine oil category includes FB-4 for lower-viscosity oils and CL-4 for higher-viscosity ...

The transition to CL-4 oils is expected to be backward-compatible, but FB-4 use may depend on OEM approvals for specific ...