2013 Chrysler Town & Country Owner Manual - Page 540

538 STARTING AND OPERATING FUEL REQUIREMENTS 3.6L Engine This engine is 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 Reformulated Gasoline premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines. Many areas of the country require the use of cleaner burning gasoline referred to as "Reformulated Gasoline." Light spark knock at low engine speeds is not harmful to Reformulated gasolines contain oxygenates and are your engine. However, continued heavy spark knock at specifically blended to reduce vehicle emissions and high speeds can cause damage and immediate service is improve air quality. required. Poor quality gasoline can cause problems such as hard starting, stalling, and hesitations. If you experi- The manufacturer supports the use of reformulated gasoence these symptoms, try another brand of gasoline lines. Properly blended reformulated gasolines will provide 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 gasolines that meet the WWFC specifications if they are available.