2015 Dodge Durango Owner Manual - Page 518

516 STARTING AND OPERATING without MMT be used in your vehicle. The MMT content Fuel System Cautions of gasoline may not be indicated on the gasoline pump, therefore, you should ask your gasoline retailer whether CAUTION! the gasoline contains MMT. MMT is prohibited in Federal Follow these guidelines to maintain your vehicle's and California reformulated gasoline. performance: Materials Added To Fuel • The use of leaded gas is prohibited by Federal law. Using leaded gasoline can impair engine perforAll gasoline sold in the United States is required to mance and damage the emissions control system. contain effective detergent additives. Use of additional • An out-of-tune engine or certain fuel or ignition detergents or other additives is not needed under normal malfunctions can cause the catalytic converter to conditions and they would result in additional cost. overheat. If you notice a pungent burning odor or Therefore, you should not have to add anything to the some light smoke, your engine may be out of tune fuel. or malfunctioning and may require immediate service. Contact your authorized dealer for service assistance. (Continued)