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Heavy Duty Use Of The Vehicle
Change engine oil at 4,000 miles (6,500 km) or
350 hours of engine run time if the vehicle is
operated in a dusty and off road environment or
is operated predominately at idle or only very
low engine RPM’ s. This type of vehicle use is
considered Severe Duty.
6.2L Supercharged And 6.4L Engines
The scheduled maintenance services listed in
this manual must be done at the times or
mileages specified to protect your vehicle war -
ranty and ensure the best vehicle performance
and reliability. More frequent maintenance may
be needed for vehicles in severe operating con-
ditions, such as dusty areas and very short trip
driving. Inspection and service should also be
done anytime a malfunction is suspected.
The oil change indicator system will remind you
that it is time to take your vehicle in for sched-
uled maintenance.
A “Oil Change Required” message will be dis-
played in the instrument cluster and a single
chime will sound, indicating that an oil change
is necessary.
Based on engine operation conditions, the oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Have your vehicle serviced as soon as possible,
within the next 500 miles (800 km).
NOTE:
•
The oil change indicator message will not moni-
tor the time since the last oil change. Change
your vehicle's oil if it has been six months since
your last oil change, even if the oil change
indicator message is NOT illuminated.
• Change your engine oil more often if you drive
your vehicle off-road/track usage for an ex-
tended period of time.
• Under no circumstances should oil change
intervals exceed 6,000 miles (10,000 km) or
six months, whichever comes first.
An authorized dealer will reset the oil change
indicator message after completing the sched-
uled oil change. If a scheduled oil change is
performed by someone other than your autho-
rized dealer, the message can be reset by refer-
ring to the steps described under “Instrument
Cluster Display” in “Getting To Know Your In-
strument Panel” in your Owner’ s Manual for
further information.
At Each Stop For Fuel
• Check the engine oil level. Refer to “Engine
Compartment” in this chapter for further in-
formation.
• Check the windshield washer solvent and add
if required.
Once A Month
• Check tire pressure and look for unusual wear
or damage.
• Inspect the battery, and clean and tighten the
terminals as required.
• Check the fluid levels of the coolant reservoir ,
brake master cylinder, and power steering
(6.2L only), and add as needed.
• Check all lights and other electrical items for
correct operation.
At Each Oil Change
• Change the engine oil filter.
• Inspect the brake hoses and lines.
CAUTION!
Failure to perform the required maintenance
items may result in damage to the vehicle.
SERVICING AND MAINTENANCE
168
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