API Service Category CL-4 and API FB-4 'Donut' certification marks enable oil marketers to align with 2027 heavy-duty engine standards.

API PC-12 oil specification approved with CL-4 and FB-4 marks available ahead of 2027 licensing and new engine oil ...

The updated SL keeps its design changes restrained, but the powertrain updates are the real story here ...

Making the CL-4 and FB-4 service symbols available now allows oil marketers to prepare for a smooth transition as we approach the 2027 model year,” the American Petroleum ...

Trend Identification & Analysis: How to Read the Market’s Footprints Before the Crowd Does Fed rate decision looms as traders anticipate a 95.4% chance of a rate cut, impacting oil demand and outlook.