The next-gen heavy-duty engine oil standard (PC-12) has been formally approved, announced the American Petroleum Institute, which also introduced the new CL-4 and FB-4 “donut” certification marks ...

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 ...

The transition to CL-4 oils is expected to be backward-compatible, but FB-4 use may depend on OEM approvals for specific engines and applications. Tanks and bottles of heavy-duty diesel engine oil ...

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 ...

Engine oil is the lifeblood of an engine, directly influencing its longevity, efficiency, and performance. Yet many drivers remain unsure about what those numbers and letters—like 0W-20 or API ...

PC-12 engine oil will change oil selection, drain intervals, and shop procedures as new heavy-duty categories arrive in 2027.

January 1, 2027, will be the first license date for two new heavy-duty engine oil categories, if all goes as planned. An update from the American Petroleum Institute said it has made significant ...

TOKYO--(BUSINESS WIRE)--Idemitsu Kosan Co.,Ltd. (Head Office: Chiyoda-ku, Tokyo; Representative Director, President and Chief Executive Officer: Shunichi Kito; hereinafter referred to as “Idemitsu”) ...