January 1, 2027, will be the first license date for two new heavy-duty engine oil categories, if all goes as planned.

South American nation’s tar-like oil is what many Gulf coast facilities were built for but ramping up production to 3m barrels a day will be a long game ...

The physical and chemical differences between these crude types determine how easy they are to refine and their market value.

As defined by the U.S. Geological Survey (USGS), heavy oil is a type of crude oil characterized by an asphaltic, dense, viscous nature (similar to molasses), and its asphaltene (very large molecules ...

HOUSTON, June 1(Reuters) - Price differences between U.S. light and heavy crude oil grades have been widening, pricing data showed, as refiners around the world have been snapping up less-dense crude ...