2012 Jeep Grand Cherokee Owner Manual - Page 515

STARTING AND OPERATING 513 If a Non-FFV vehicle is inadvertently fueled with E-85 MMT In Gasoline fuel, the engine will have some or all of these symptoms: MMT is a manganese-containing metallic additive that is blended into some gasoline to increase octane. Gasoline • operate in a lean mode blended with MMT provides no performance advantage • OBD II "Malfunction Indicator Light" on beyond gasoline of the same octane number without MMT. Gasoline blended with MMT reduces spark plug • poor engine performance life and reduces emissions system performance in some • poor cold start and cold driveability vehicles. The manufacturer recommends that gasoline without MMT be used in your vehicle. The MMT content • increased risk for fuel system component corrosion of gasoline may not be indicated on the gasoline pump, To fix a Non-FFV vehicle inadvertently fueled once with therefore, you should ask your gasoline retailer whether E-85 perform the following: the gasoline contains MMT. It is even more important to look for gasoline without MMT in Canada, because MMT • change the engine oil and oil filter can be used at levels higher than those allowed in the • disconnect and reconnect the battery United States. MMT is prohibited in Federal and California reformulated gasoline. • drain the fuel tank (see your authorized dealer) More extensive repairs will be required for prolonged exposure to E-85 fuel. 5