U.S. crude oil futures inched up from post-settlement levels Tuesday after the American Petroleum Institute showed a much larger draw than expected in U.S. weekly crude supplies.

The diesel engine oil available for your fleet is about to undergo a major change. Two new oil categories, CK-4 and FA-4, have been announced by the American Petroleum Institute (API) and will replace ...

U.S. crude oil futures were little changed from post-settlement levels Tuesday after the American Petroleum Institute reported a fall in domestic crude inventories.

It’s show time at last for the producers of motor oils developed through the API Proposed Category 11 process. PC-11 was launched in 2011 to develop specs for a new oil-service category to succeed the ...

Come December, you’ll see a new API oil classification with lower-viscosity parameters designed to be used in the next generation of fuel-efficient engines. In fact, you’ll see two different oil ...

Both API and EIA reports can influence crude oil prices, though the API is often used as a preliminary indicator. The EIA report includes crucial refinery utilization data, providing deeper insights ...

If you've ever bought a quart of motor oil for your vehicle, you've likely encountered the letters API somewhere on the label. In fairness, there are a lot of abbreviations, symbols and odd number ...

-Engine Oil Function The oil that circulates through an engine plays an important part in engine life. Not only does it lubricate the fast moving parts of the engine to reduce friction and wear, but ...

Crude oil inventories in the United fell by 4.7 million barrels for the week ending December 6, according to The American Petroleum Institute (API). Analysts had expected a draw of 1.85 million ...