Commercial Carrier Journal

New engine oil category 'on the final step'

The American Petroleum Institute (API) is finalizing PC-12 engine oil specs for 2027. Learn about CL-4 and FB-4 licensing ...
CCJ

API introduces new donut to differentiate new FA-4 diesel oil

The American Petroleum Institute will introduce a special Service Symbol Donut to help consumers identify the newly-approved FA-4 (PC-11) diesel engine oil. API approved two new diesel oil standards, ...
Truckinginfo

API Reports Progress on New Heavy Duty Engine Oil Categories

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 ...
Forbes

Motor Oil Update: API Introduces New ‘SQ’ Service Category

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 ...