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 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 ...

The oil and gas industry’s largest trade group has issued new guidelines for pipeline companies intended to smooth relations with landowners, but the move could fuel demands to release more ...

Shell's Dan Arcy explains how oils protect against scuffing or adhesive wear in the cylinders and liners in an earlier engine teardown. (Photo: Deborah Lockridge) A proposed test for adhesive wear, or ...

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 ...