Ever seen the “unleaded” label at the gas station and wondered what it meant? For decades, gasoline contained heavy lead. Introduced in 1921 by General Motors, leaded fuel allowed engines to ...

San Diego's Montgomery-Gibbs Executive Airport began offering unleaded gasoline to clients ... By switching from leaded gasoline -- which increases the risk of lead exposure in the air when ...

The light oil in gasoline normally consists of molecules with five to twelve carbon atoms. The distillation range lies between 35 and 215 degrees Celsius. Additives are additions to modify fuel ...