2013 Dodge Charger Owner Manual SRT - Page 454

452 STARTING AND OPERATING FUEL REQUIREMENTS 6.4L Engine The 6.4L engine is designed to meet all emissions regulations and provide excellent fuel economy and performance when using high-quality premium unleaded gasoline with an octane rating of 91 or higher. necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recommends the use of gasolines that meet the WWFC specifications if they are available. Reformulated Gasoline Many areas of the country require the use of cleaner burning gasoline referred to as "Reformulated Gasoline." Reformulated gasolines contain oxygenates and are speLight spark knock at low engine speeds is not harmful to cifically blended to reduce vehicle emissions and imyour engine. However, continued heavy spark knock at prove air quality. high speeds can cause damage and immediate service is The manufacturer supports the use of reformulated gasorequired. Poor quality gasoline can cause problems such lines. Properly blended reformulated gasolines will proas hard starting, stalling, and hesitations. If you experi- vide excellent performance and durability of engine and ence these symptoms, try another brand of gasoline fuel system components. before considering service for the vehicle. Over 40 auto manufacturers worldwide have issued and endorsed consistent gasoline specifications (the Worldwide Fuel Charter, WWFC) which define fuel properties