2014 Jeep Grand Cherokee Owner Manual SRT - Page 464

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