2012 Jeep Grand Cherokee Owner Manual - Page 519

STARTING AND OPERATING 517 When you do switch fuel types it is recommended that: Ethanol Fuel (E-85) E-85 is a mixture of approximately 85% fuel ethanol and • you do not switch when the fuel gauge indicates less 15% unleaded gasoline. than 1/4 full WARNING! Ethanol vapors are extremely flammable and could cause serious personal injury. Never have any smoking materials lit in or near the vehicle when removing the fuel filler tube cap (gas cap) or filling the tank. Do not use E-85 as a cleaning agent and never use it near an open flame. • you do not add less than 5 gallons (19 Liters) when refueling • you operate the vehicle immediately after refueling for a period of at least 5 minutes Observing these precautions will avoid possible hard starting and/or significant deterioration in driveability during warm up. 5 NOTE: Fuel Requirements Your vehicle will operate on both unleaded gasoline with • When the ambient temperature is above 90° F (32° C), you may experience hard starting and rough idle an octane rating of 87, or E-85 fuel, or any mixture of following start up even if the above recommendations these two. For best results, a refueling pattern that are followed. alternates between E-85 and unleaded gasoline should be avoided.