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 ...

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

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

Engine oils are the lifeblood of a vehicle's engine, ensuring its smooth operation, longevity and protection against wear and tear. When extreme cold temperatures arrive, the choice of engine oil ...

A new heavy-duty engine oil specification designed to support next-generation diesel engines is nearing completion and ...