Mastodawn

"...increasing the #ethanol content in California #gasoline from the allowable 10% to 15% reduced harmful vehicle #emissions, including #nitrogen oxides (NOx), which are a primary precursor to ground-level #ozone formation, and #particulate emissions."
https://techxplore.com/news/2025-11-emissions-higher-ethanol-gasoline.html

Study finds lower emissions from higher-ethanol gasoline

California residents will soon get some price relief at the pump and reductions in harmful vehicle emissions, thanks in part to a landmark UC Riverside vehicle emissions study.

Tech Xplore