2015 Chrysler 200 Owner Manual - Page 523

STARTING AND OPERATING 521 FUEL REQUIREMENTS All engines are designed to meet all emissions regulations and provide excellent fuel economy and performance when using high-quality unleaded "regular" gasoline having an octane rating of 87. The use of premium gasoline is not recommended, as it will not Reformulated Gasoline provide any benefit over regular gasoline in these Many areas of the country require the use of cleaner engines. burning gasoline referred to as "Reformulated Gasoline." Light spark knock at low engine speeds is not harmful to Reformulated gasoline contain oxygenates and are speyour engine. However, continued heavy spark knock at cifically blended to reduce vehicle emissions and imhigh speeds can cause damage and immediate service is prove air quality. required. Poor quality gasoline can cause problems such The manufacturer supports the use of reformulated gasoas hard starting, stalling, and hesitations. If you experi- line. Properly blended reformulated gasoline will proence these symptoms, try another brand of gasoline vide excellent performance and durability of engine and before considering service for the vehicle. fuel system components. Over 40 auto manufacturers worldwide have issued and endorsed consistent gasoline specifications (the Worldwide Fuel Charter, WWFC) which define fuel properties necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recommends the use of gasoline that meet the WWFC specifications if they are available. 5