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.

At-a-Glance: Heavy oil is a dense, viscous petroleum fluid (typically 10–22 °API) enriched in resins/asphaltenes with low gas content, formed when originally lighter oils are altered after charge by ...

Most people understand that motor oil is a vital component for the internal combustion engines that power most of our cars. Not only does oil act as a lubricant, allowing internal moving parts to ...

Motor oil is the lifeblood of your car's engine. Not only does it provide lubrication for all of your engine's internal moving parts — of which there are massive amounts — but it also works like a ...