2014 Dodge Durango Owner Manual - Page 489

STARTING AND OPERATING 487 gasoline retailer whether the gasoline contains MMT. Fuel System Cautions MMT is prohibited in Federal and California reformulated gasoline. CAUTION! Materials Added To Fuel All gasoline sold in the United States is required to contain effective detergent additives. Use of additional detergents or other additives is not needed under normal conditions and they would result in additional cost. Therefore, you should not have to add anything to the fuel. Follow these guidelines to maintain your vehicle's performance: • The use of leaded gas is prohibited by Federal law. Using leaded gasoline can impair engine performance and damage the emissions control system. • An out-of-tune engine or certain fuel or ignition malfunctions can cause the catalytic converter to overheat. If you notice a pungent burning odor or some light smoke, your engine may be out of tune or malfunctioning and may require immediate service. Contact your authorized dealer for service assistance. (Continued) 5