Dodge Durango

 Owners Manual

Starting and operating » Fuel requirements
MMT In Gasoline

Methylcyclopentadienyl Manganese Tricarbonyl (MMT) is a manganese-containing metallic additive that is blended into some gasoline to increase octane. Gasoline 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, therefore, you should ask your gasoline retailer whether the gasoline contains MMT. MMT is prohibited in Federal and California reformulated gasoline.

3.6L Engine - If Equipped

5.7L Engine - If Equipped

Reformulated Gasoline

Gasoline/Oxygenate Blends

E-85 Usage In Non-Flex Fuel Vehicles

MMT In Gasoline

Materials Added To Fuel

Fuel System Cautions

Carbon Monoxide Warnings