Metallic additives
allows lead content up to 0.005 grams per liter (g/l). The SGS Worldwide Fuel Survey (WWFS) found no traces of lead in any gasoline samples from 2015 to 2020. Metallic additives iron and manganese were not detected in the last few years, with the exception of one RON 95 E5 fuel sampled in 2017, which contained 0.3 milligrams per liter (mg/l) of manganese.