2015 Chrysler Town & Country Owner Manual - Page 545

STARTING AND OPERATING 543 of premium gasoline is not recommended, as it will not Reformulated Gasoline provide any benefit over regular gasoline in these en- Many areas of the country require the use of cleaner gines. 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 Gasoline/Oxygenate Blends endorsed consistent gasoline specifications (the Worldwide Fuel Charter, WWFC) which define fuel properties Some fuel suppliers blend unleaded gasoline with oxynecessary to deliver enhanced emissions, performance, genates such as Ethanol. and durability for your vehicle. The manufacturer recommends the use of gasolines that meet the WWFC specifications if they are available. 5