2015 Jeep Grand Cherokee Owner Manual SRT - Page 476

474 STARTING AND OPERATING To fix a Non-FFV vehicle inadvertently fueled once with MMT. Gasoline blended with MMT reduces spark plug life and reduces emissions system performance in some E-85 perform the following: vehicles. The manufacturer recommends that gasoline • Drain the fuel tank (see your authorized dealer). without MMT be used in your vehicle. The MMT content of gasoline may not be indicated on the gasoline pump, • Change the engine oil and oil filter. therefore, you should ask your gasoline retailer whether • Disconnect and reconnect the battery to reset the the gasoline contains MMT. MMT is prohibited in Federal engine controller memory. and California reformulated gasoline. More extensive repairs will be required for prolonged Materials Added To Fuel exposure to E-85 fuel. All gasoline sold in the United States is required to MMT In Gasoline contain effective detergent additives. Use of additional Methylcyclopentadienyl Manganese Tricarbonyl (MMT) detergents or other additives is not needed under normal is a manganese-containing metallic additive that is conditions and they would result in additional cost. blended into some gasoline to increase octane. Gasoline Therefore, you should not have to add anything to the blended with MMT provides no performance advantage fuel. beyond gasoline of the same octane number without