2010 Jeep Commander Owner's Manual - Page 317

STARTING AND OPERATING 317 conditions and would result in additional cost. Therefore, • The use of fuel additives which are now being sold as you should not have to add anything to the fuel. octane enhancers is not recommended. Most of these products contain high concentrations of Methanol. Fuel System Cautions Fuel system damage or vehicle performance problems resulting from the use of such fuels or additives is not CAUTION! the responsibility of the manufacturer. Follow these guidelines to maintain your vehicle's NOTE: Intentional tampering with emissions control performance: systems can result in civil penalties being assessed against you. • The use of leaded gas is prohibited by Federal law. Using leaded gasoline can impair engine performance Carbon Monoxide Warnings and damage the emission control system. • An out-of-tune engine, or certain fuel or ignition malfunctions, can cause the catalytic converter to overheat. If you notice a pungent burning odor or some light smoke, your engine may be out of tune or malfunctioning and may require immediate service. Contact your authorized dealer for service assistance. 5 WARNING! Carbon monoxide (CO) in exhaust gases is deadly. Follow the precautions below to prevent carbon monoxide poisoning.