engine oil JEEP WRANGLER 2010 Owners Manual

gASCAP
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, a
“gASCAP” message will display in the odometer display
area. Tighten the fuel filler cap properly and press the
TRIP ODOMETER button to turn off the message. If the
problem continues, the message will appear the next time
the vehicle is started.
noFUSE
If the vehicle diagnostic system determines that the
Ignition Off Draw (IOD) fuse is improperly installed, or
damaged, a “noFUSE” message will display in the odom-
eter display area. For further information on fuses and
fuse locations refer to “Fuses” in “Maintaining Your
Vehicle”.CHAngE OIL Message
Your vehicle is equipped with an engine oil change
indicator system. The “CHANgE OIL” message will flash
in the instrument cluster odometer for approximately
12 seconds after a single chime has sounded to indicate
the next scheduled oil change interval. The engine oil
change indicator system is duty-cycle based, which
means the engine oil change interval may fluctuate
dependent upon your personal driving style.
Unless reset, this message will continue to display each
time you turn the ignition switch to the ON/RUN
position. To turn off the message temporarily, press and
release the Trip Odometer button on the instrument
cluster. To reset the oil change indicator system (after
performing the scheduled maintenance), refer to the
following procedure:
256 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION! (Continued)
•Your vehicle has been built with improved fluids
that protect the performance and durability of
your vehicle and also allow extended maintenance
intervals. Do not use chemical flushes in these
components as the chemicals can damage your
engine, transmission, power steering or air condi-
tioning. Such damage is not covered by the New
Vehicle Limited Warranty. If a flush is needed
because of component malfunction, use only the
specified fluid for the flushing procedure.
Engine Oil
Checking Oil Level
To assure proper lubrication of your vehicle’s engine, the
engine oil must be maintained at the correct level. The
best time to check the engine oil level is about fiveminutes after a fully warmed up engine is shut off or
before starting the engine after it has sat overnight.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Always
maintain the oil level within the SAFE zone on the
dipstick. Adding 1 U.S. Quart (0.95L) of oil when the
reading is at the bottom of the SAFE zone will result in a
reading at the top of the safe zone on these engines.

Engine Oil Viscosity (SAE Grade)
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in “Maintaining Your Vehicle” for further informa-
tion.
Lubricants which do not have both, the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber, should not be used.
Synthetic Engine Oils
Synthetic engine oils can be used if the recommended oil
quality requirements are met, and the recommended
maintenance intervals for oil and filter changes are
followed.
Materials Added to Engine Oils
The manufacturer strongly recommends against the ad-
dition of any additives (other than leak detection dyes) to
engine oil. Engine oil is an engineered product and its
performance may be impaired by supplemental
additives.
Disposing of Used Engine Oil and Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your authorized dealer, service
station, or governmental agency for advice on how and
where used oil and oil filters can be safely discarded in
your area.
Engine Oil Filter
The engine oil filter should be replaced with a new filter
at every engine oil change.
462 MAINTAINING YOUR VEHICLE

Exhaust System
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
If you notice a change in the sound of the exhaust system;
or if the exhaust fumes can be detected inside the vehicle;
or when the underside or rear of the vehicle is damaged;
have an authorized technician inspect the complete ex-
haust system and adjacent body areas for broken, dam-
aged, deteriorated, or mispositioned parts. Open seams
or loose connections could permit exhaust fumes to seep
into the passenger compartment. In addition, inspect the
exhaust system each time the vehicle is raised for lubri-
cation or oil change. Replace as required.

Child Restraint Tether Anchors.............67,69
Child Seat .............................. 66
Climate Control ......................... 317
Clock ..................... 269,283,285,288,297
Compact Disc (CD) Maintenance ............. 316
Compass .............................. 261
Compass Calibration ..................... 264
Computer, Trip/Travel .................260,261
Console .............................. 153
Console, Floor .......................... 153
Contract, Service ........................ 529
Cooling System ......................... 470
Adding Coolant (Antifreeze) .............. 472
Coolant Capacity ...................... 501
Coolant Level ......................... 474
Disposal of Used Coolant ................ 474
Drain, Flush, and Refill .................. 471
Inspection ........................... 470
Points to Remember .................... 475 Pressure Cap
......................... 473
Selection of Coolant (Antifreeze) .........471,501
Corrosion Protection ..................... 482
Cruise Light ........................... 251
Cupholders ............................ 152
Customer Assistance ..................... 527
Data Recorder, Event ...................... 60
Daytime Running Lights ................... 139
Dealer Service .......................... 458
Defroster, Rear Window ................... 239
Defroster, Windshield .............77,318,319,321
Delay (Intermittent) Wipers ................. 143
Diagnostic System, Onboard ................ 456
Dimmer Switch, Headlight ................. 138
Dipsticks Oil (Engine) .......................... 460
Power Steering ........................ 368
Disabled Vehicle Towing ................... 451
538 INDEX

Flooded, Starting...................... 332
Fuel Requirements .................. 41 1,501
Jump Starting ......................... 446
Oil .............................. 460,501
Oil Disposal .......................... 462
Oil Filter ............................ 462
Oil Selection .......................... 501
Overheating .......................... 440
Starting ............................. 331
Temperature Gauge .................... 251
Engine Oil Viscosity ...................... 462
Engine Oil Viscosity Chart ................. 462
Enhanced Accident Response Feature .......... 58
Entry System, Illuminated .................. 19
Event Data Recorder ...................... 60
Exhaust Gas Caution ................... 76,415
Exhaust System ....................... 76,468
Extender, Seat Belt ........................ 49
Exterior Finish Care ...................... 483 Exterior Lights
.......................... 79
Fabric Care ......................... 485,487
Fabric Top ............................. 487
Filters Air Cleaner .......................... 463
Engine Oil ........................... 462
Finish Care ............................ 483
Flashers Hazard Warning ....................... 440
Turn Signal ................... 79,247,499,500
Flooded Engine Starting ................... 332
Fluid Capacities ......................... 501
Fluid Leaks ............................. 79
Fluid Level Checks ...................... 482
Automatic Transmission ................. 478
Engine Oil ........................... 460
Manual Transmission ................... 481
Power Steering ........................ 368
540 INDEX

Electronic Throttle Control Warning......... 260
Engine Temperature Warning .............. 250
Exterior .............................. 79
Fog ............................. 138,499
Hazard Warning Flasher ................. 440
Headlight Switch ...................... 136
Headlights ........................... 498
High Beam .......................... 247
High Beam Indicator .................... 247
Instrument Cluster ..................... 136
Interior ............................. 140
Lights On Reminder .................... 138
Low Fuel ............................ 246
Oil Pressure .......................... 247
Passing ............................. 138
Rear Servicing ........................ 500
Rear Tail ............................ 500
Seat Belt Reminder ..................... 247
Security Alarm (Theft Alarm) .............. 250Service
............................. 498
Side Marker .......................... 500
Theft Alarm (Security Alarm) .............. 250
Tire Pressure Monitoring (TPMS) ........... 252
Turn Signal ................ 79,137,247,499,500
Voltage ............................. 246
Warning (Instrument Cluster Description) ..... 246
Loading Vehicle ......................... 418
Tires ............................... 393
Locking Axle ........................ 350,351
Locks Door ................................ 30
Power Door ........................... 31
Steering Wheel ......................... 13
Lower Anchors and Tether for CHildren
(LATCH) ............................ 67,69
Lubrication, Body ....................... 466
Maintenance Free Battery .................. 463
544 INDEX

Oil Pressure Light....................... 247
Onboard Diagnostic System ..............456,457
Operator Manual (Owner’s Manual) ............ 6
Outside Rearview Mirrors .................. 87
Overheating, Engine ................... 251,440
Owner’s Manual (Operator Manual) .........6,531
Paint Care ............................. 482
Paint Damage .......................... 482
Panic Alarm ............................ 21
Parking Brake .......................... 369
Passing Light ........................... 138
Pets .................................. 74
Phone, Cellular .......................... 88
Phone, Hands-Free (Uconnect™) .............. 88
Placard, Tire and Loading Information ......... 394
Polishing and Waxing ..................... 483
Power Door Locks ........................... 31 Steering
.......................... 367,368
Windows ............................. 34
Pregnant Women and Seat Belts .............. 49
Preparation for Jacking .................... 443
Pretensioners Seat Belts ............................ 47
Radial Ply Tires ......................... 401
Radio Operation ........................ 317
Radio, Satellite (Uconnect studios)........... 311
Rear Axle (Differential) .................... 482
Rear Swing Gate ......................... 36
Rear Window Defroster ................... 239
Rear Window Features .................... 238
Rear Wiper/Washer ...................... 238
Rearview Mirrors ........................ 86
Recorder, Event Data ...................... 60
Recreational Towing ...................... 435
Shifting into Transfer Case Neutral (N) ....... 436
546 INDEX