Jeep Cherokee (KL): Flexible fuel (2.4L engine only)

E-85 General Information

The information in this section is unique for Flexible Fuel vehicles only. These vehicles can be identified by a unique fuel filler door label that states Ethanol (E-85) or Unleaded Gasoline Only and a yellow fuel cap. Please refer to the other sections of this manual for information on features that are common between Flexible Fuel and non-Flexible Fuel powered vehicles.


Only vehicles with the E-85 fuel filler door label or a yellow gas cap can operate on E-85.

Ethanol Fuel (E-85)

E-85 is a mixture of approximately 85% ethanol and 15% unleaded gasoline.


Ethanol vapors are extremely flammable and could cause serious personal injury. Never have any smoking materials lit or products that can cause spark 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.

Fuel Requirements

If your vehicle is E-85 compatible, it will operate on unleaded gasoline with any octane rating, or solely E-85 fuel, or any mixture of these fuels.

For best results, avoid fueling patterns alternating between E-85 and unleaded gasoline.

When switching fuel types:

  • Add 5 gallons (19 liters) or more when refueling.
  • Drive the vehicle immediately after refueling for at least 5 miles (8 km).

Observing these precautions will avoid possible hard starting and/or driveability problems during warm up.


  • Use seasonally adjusted E-85 fuel (ASTM D5798).With non-seasonally adjusted E-85 fuel, hard starting and rough idle following start up may be experienced even if the above recommendations are followed, especially when the ambient temperature is below 32F (0C).
  • Some additives used in regular gasoline are not fully compatible with E-85 and may form deposits in your engine. To eliminate driveability issues that may be caused by these deposits, a supplemental gasoline additive, such as MOPAR Injector Cleanup or Techron may be used.

Selection Of Engine Oil For Flexible Fuel Vehicles (E-85) And Gasoline Vehicles

FFV vehicles operated on E-85 require specially formulated engine oils. These special requirements are included in MOPAR engine oils, and in equivalent oils meeting FCA US Material Standard MS-6395. It is recommended that engine oils that are API Certified and meet the requirements of Material Standard MS-6395 be used.

MS-6395 contains additional requirements, developed during extensive fleet testing, to provide additional protection to FCA US LLC engines.


The characteristics of E-85 fuel make it unsuitable for use when ambient temperatures fall below 0F (-18C). In the range of 0F (-18C) to 32F (0C), an increase in the time it takes for your engine to start may be experienced, and a deterioration in driveability (sags and/or hesitations) until the engine is fully warmed up. These issues may be improved with the use of seasonally adjusted E-85 fuel.

NOTE: Use of the engine block heater (if equipped) may improve engine start time when using E-85 fuel when the ambient temperature is less than 32F (0C).

Cruising Range

Because E-85 fuel contains less energy per gallon/liter than gasoline, an increase in fuel consumption will be experienced. The miles per gallon (mpg)/kilometers per liter and the driving range will decrease by approximately 30%, compared to gasoline operation.

Replacement Parts

All fuel and engine components in your Flexible Fuel Vehicle (FFV) are designed to be compatible with ethanol.

Ethanol compatible service components are required.


Replacing fuel system components with non-ethanol compatible components can damage your vehicle.



Do not use ethanol mixture greater than 85% in your vehicle. It will cause difficulty in cold starting and may affect drivability.

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