2012 Jeep Wrangler Owner Manual - Page 464

462 STARTING AND OPERATING • disconnect and reconnect the battery to reset the It is even more important to look for gasoline without MMT in Canada, because MMT can be used at levels engine controller memory higher than those allowed in the United States. More extensive repairs will be required for prolonged MMT is prohibited in Federal and Californiaexposure to E-85 fuel. reformulated gasoline. MMT In Gasoline MMT is a manganese containing metallic additive that is Materials Added To Fuel blended into some gasoline to increase the octane num- All gasoline sold in the United States is required to ber. Gasoline blended with MMT offers no performance contain effective detergent additives. Use of additional advantage beyond gasoline of the same octane number detergents or other additives are not needed under without MMT. Gasoline blended with MMT has shown normal conditions and would result in additional cost. to reduce sparkplug life and reduce emission system Therefore you should not have to add anything to the performance in some vehicles. The manufacturer recom- fuel. mends 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 if the gasoline contains MMT.