2013 Dodge Durango Owner Manual - Page 537
2013 Dodge Durango Manual
Page 537 highlights
STARTING AND OPERATING 535 of premium gasoline is not recommended, as it will not as hard starting, stalling, and hesitations. If you experiprovide any benefit over regular gasoline in these ence these symptoms, try another brand of gasoline before considering service for the vehicle. engines. 5.7L Engine - If Equipped This engine is designed to meet all emissions regulations and provide satisfactory fuel economy and performance when using high-quality unleaded gasoline having an octane range of 87 to 89. The manufacturer recommends the use of 89 octane for optimum performance. The use of premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines. 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. Reformulated Gasoline 5 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 required. Poor quality gasoline can cause problems such
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