Over time, tiny contaminants invade the oil, like combustion byproducts, miniscule metal fragments from the engine, and a sludge created by the continuous cycle of heating up and cooling down.

U.S. oil production will peak between 2027 and 2030, Occidental Petroleum Corp CEO Vicki Hollub said on Tuesday at the ...

and engineering to discover a cost-effective way to explore and access petroleum. Most chemists in this field work for large oil companies or for independent companies that support the industry with ...