2005 JEEP LIBERTY octane

The suggested rotation method is the “forward-cross”
shown in the following diagram.FUEL REQUIREMENTS (GASOLINE ENGINES)
Your engine is designed to meet all emis-
sions regulations and provide excellent
fuel economy and performance when us-
ing high quality unleaded gasoline having
an octane rating of 87. The use of premium
gasoline is not recommended. The use of
premium gasoline will provide no benefit over high
quality regular gasoline, and in some circumstances may
result in poorer performance.
Mid-grade gasoline (89 octane) will enhance engine per-
formance during the following conditions (3.7L Only):
•Hot weather
•Towing
•Hard accelerations
•Hilly terrain
•Low humidity
276 STARTING AND OPERATING

Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxy-
genates such as 10% ethanol, MTBE, and ETBE. Oxygen-
ates are required in some areas of the country during the
winter months to reduce carbon monoxide emissions.
Fuels blended with these oxygenates may be used in
your vehicle.
CAUTION!
DO NOT use gasoline containing METHANOL.
Gasoline containing methanol may damage critical
fuel system components.
MMT In Gasoline
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 emission 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
or not his/her gasoline contains MMT.
It is even more important to look for gasoline without
MMT in Canada because MMT can be used at levels
higher than allowed in the United States. MMT is pro-
hibited in Federal and California reformulated gasoline.
278 STARTING AND OPERATING

Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance,
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 dealer for service assistance.
•The use of fuel additives which are now being sold as
octane enhancers is not recommended. Most of these
products contain high concentrations of methanol.
Fuel system damage or vehicle performance problems
resulting from the use of such fuels or additives is not
the responsibility of the manufacturer.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
STARTING AND OPERATING 279
5

RECOMMENDED FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant MoparAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology)
Engine Oil (2.4L and 3.7L Engines) Use API Certified SAE 5W-30 Engine Oil, meeting the requirements of
DaimlerChrysler Material Standard MS-6395.
Engine Oil (2.8L Diesel Engines) Use API Certified SAE 0W-40 Mobil 1Synthetic Engine Oil that meets API
Categories SL/CF, and the requirements of DaimlerChrysler Material Stan-
dard MS-10725. If SAE 0W-40 is not available, SAE 5W-40 Mobil 1Synthetic
Engine Oil is acceptable.
Oil Filter (2.4L Engine) MoparOil Filter (P/N 4105409 or 4105409AB)
Oil Filter (3.7L Engine) MoparOil Filter (P/N 4781452AA or 4781452BB)
Oil Filter (2.8L Diesel Engine) MoparOil Filter (P/N 05072720AA)
Spark Plugs Refer to the Vehicle Emission Control Information label in the engine com-
partment.
Fuel Selection (Gasoline Engines
Only)87 Octane (89 Octane should be used for trailer towing purposes - 3.7L
Only).
MAINTAINING YOUR VEHICLE 357
7

Exhaust Gas Caution...................73,280
Exhaust System......................... 324
Exterior Finish Care...................... 338
Filters
Air Cleaner.......................... 319
Engine Oil........................... 316
Finish Care............................ 338
Flashers
Hazard Warning....................... 292
Turn Signal.....................168,352,355
Flooded Engine Starting................... 222
Fluid Capacities......................... 356
Fluid Leaks............................. 75
Fluid Level Checks....................... 75
Automatic Transmission................. 333
Clutch Fluid.......................... 335
Engine Oil........................... 312
Manual Transmission................... 335Power Steering........................ 322
Fog Light Service........................ 353
Fog Lights..........................120,353
Folding Rear Seat........................ 113
Four Wheel Drive....................... 236
Operation........................... 236
Shifting..........................239,243
Systems..........................236,240
Four-Way Hazard Flasher.................. 292
Freeing A Stuck Vehicle................... 236
Front Axle............................. 337
Fuel..............................276,280
Diesel.............................. 280
Filler Cap............................ 281
Filler Door........................... 281
Gasoline............................ 276
Gauge.............................. 174
Materials Added....................... 279
Octane Rating........................ 276
INDEX 405
10

Heated.............................. 84
Outside.............................. 82
Rearview............................. 81
Vanity............................... 84
Modifications/Alterations, Vehicle............. 9
Monitor, Tire Pressure System............... 268
Mopar Parts......................... 311,395
Multi-Function Control Lever............... 118
Navigation System....................... 203
New Vehicle Break-In Period................ 73
Occupant Classification System............... 55
Occupant Restraints....................... 37
Octane Rating, Gasoline................... 276
Odometer............................. 171
Trip ................................ 171
Off-Pavement Driving..................249,341
Off-Road Driving.....................249,341Oil, Engine............................ 312
Capacity............................ 356
Change Interval....................... 313
Checking............................ 312
Dipstick............................. 312
Identification Logo..................... 314
Materials Added to..................... 315
Pressure Warning Light.................. 172
Recommendation.................314,315,356
Synthetic............................ 315
Viscosity.......................314,315,356
Oil Filter, Selection....................... 316
Oil Pressure Light....................... 172
Onboard Diagnostic System..............309,310
Opener, Garage Door..................... 139
Organizer, Cargo........................ 154
Outside Rearview Mirrors.................. 82
Overhead Console....................... 129
Overheating, Engine...................... 293
410 INDEX