Editing Gasoline (section)

====MMT====
[[Methylcyclopentadienyl manganese tricarbonyl]] (MMT) is used in Canada and the U.S. to boost octane rating.<ref>{{cite web |last1=Hollrah |first1=Don P. |last2=Burns |first2=Allen M. |date=11 March 1991 |title=MMT Increases Octane While Reducing Emissions |url=http://www.ogj.com/articles/print/volume-89/issue-10/in-this-issue/refining/mmt-increases-octane-while-reducing-emissions.html |url-status=live |archive-url=https://web.archive.org/web/20161117072536/http://www.ogj.com/articles/print/volume-89/issue-10/in-this-issue/refining/mmt-increases-octane-while-reducing-emissions.html |archive-date=17 November 2016 |website=www.ogj.com |df=dmy-all}}</ref> Its use in the U.S. has been restricted by regulations, although it is currently allowed.<ref>{{cite web |date=5 October 2015 |title=EPA Comments on the Gasoline Additive MMT |url=https://www.epa.gov/gasoline-standards/epa-comments-gasoline-additive-mmt |url-status=live |archive-url=https://web.archive.org/web/20161117070650/https://www.epa.gov/gasoline-standards/epa-comments-gasoline-additive-mmt |archive-date=17 November 2016 |website=www.epa.gov |language=en |df=dmy-all}}</ref> Its use in the European Union is restricted by Article 8a of the Fuel Quality Directive<ref>{{cite web |title=Directive 2009/30/EC of the European Parliament and of the Council of 23 April 2009 |url=http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:140:0088:0113:EN:PDF |url-status=live |archive-url=https://web.archive.org/web/20160922172330/http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:140:0088:0113:EN:PDF |archive-date=22 September 2016 |access-date=July 31, 2020}}</ref> following its testing under the Protocol for the evaluation of effects of metallic fuel-additives on the emissions performance of vehicles.<ref>{{cite web |title=Protocol for the Evaluation of Effects of Metallic Fuel-Additives on the Emissions Performance of Vehicles |url=https://ec.europa.eu/clima/sites/clima/files/transport/fuel/docs/fuel_metallic_additive_protocol_en.pdf |url-status=live |archive-url=https://web.archive.org/web/20210301173052/https://ec.europa.eu/clima/sites/clima/files/transport/fuel/docs/fuel_metallic_additive_protocol_en.pdf |archive-date=1 March 2021 |access-date=July 31, 2020}}</ref>