2015 Jeep Grand Cherokee Owner Manual - Page 527
2015 Jeep Grand Cherokee Manual
Page 527 highlights
STARTING AND OPERATING 525 therefore, you should ask your gasoline retailer whether the gasoline contains MMT. MMT is prohibited in Federal • Disconnect and reconnect the battery to reset the and California reformulated gasoline. engine controller memory. Materials Added To Fuel More extensive repairs will be required for prolonged All gasoline sold in the United States is required to exposure to E-85 fuel. contain effective detergent additives. Use of additional MMT In Gasoline detergents or other additives is not needed under normal Methylcyclopentadienyl Manganese Tricarbonyl (MMT) conditions and they would result in additional cost. is a manganese-containing metallic additive that is Therefore, you should not have to add anything to the blended into some gasoline to increase octane. Gasoline fuel. blended with MMT provides no performance advantage beyond gasoline of the same octane number without MMT. Gasoline blended with MMT reduces spark plug life and reduces emissions system performance in some vehicles. The manufacturer recommends that gasoline 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. 5
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