The automotive industry's version of a gang threat. When an engine fails to completely combust its fuel, it unleashes the unholy trinity of pollutants: SO x (sulfur oxides), NO x (nitrogen oxides), and CO x (carbon oxides). These chemical thugs don't just hang around street corners—they ascend to the atmosphere, wreaking havoc on our ozone and climate. It's basically a drive-by shooting aimed at the stratosphere. Your car's check engine light isn't a suggestion; it's a hostage negotiation situation.