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The best time to check the oil level is approximately 5
minutes after a fully warmed up engine is turned off or
before starting the engine after it has sat overnight.
Checking the oil while the vehicle is on level ground also
will improve the accuracy of the oil level readings. Add
oil only when the level is below the SAFE mark.Changing Engine Oil
Road conditions and your kind of driving affects the
interval at which your oil should be changed.
IfANYof the following apply to you, then change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first and follow the maintenance rec-
ommendations in ScheduleB.
•Day or night temperatures are below 32°F(0°C)
•Stop and go driving
•Extensive engine idling
•Driving in dusty conditions
•Short trip driving of less than 10 miles (16.2 km)
•More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
•Taxi, Police, or delivery service (commercial service)Engine Oil Dipstick
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•Trailer towing
•Off-road or desert driving
•If equipped for and operating with E–85 (ethanol) fuel
If none of these apply to you, then change your engine oil
every 6,000 miles (10 000 km) or 6 months, whichever
comes first and follow the maintenance recommenda-
tions in ScheduleA.
CAUTION!
Overfilling the crankcase will cause oil aeration and
loss of oil pressure. This could damage your engine.
Engine Oil Selection
For best performance and maximum protection under all
types of operating conditions, the manufacturer only
recommends full synthetic engine oils that are API rated
as SL/CF and meet the requirements of DaimlerChrysler
Material Standard MS-10725. Use Mopar or an equivalent
oil meeting the specification MS-10725.
If you choose to operate this vehicle in a very aggres-
sive driving style, the manufacturer recommends the
use of a full synthetic engine oil, such as Mobil 1SAE
0W-40.
Engine Oil Viscosity Chart
The proper SAE viscosity grade of engine oil should be
selected based on the following recommendation and be
within the operating temperature shown in the engine oil
viscosity chart.
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Materials Added to Engine Oil
The manufacture strongly recommends against the addi-
tion of any additives (other than leak detection dyes) to
the engine oil. Engine oil is an engineered product and
it’s performance may be impaired by supplemental ad-
ditives.
Disposing of Used Engine Oil
Care should be taken in disposing of used engine oil from
your vehicle. Used oil, indiscriminately discarded, can
present a problem to the environment. Contact your
dealer, service station, or governmental agency for advice
on how and where used oil 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.
Engine Oil Filter Selection
All manufacturer’s engines have a full-flow type dispos-
able oil filter. Use a filter of this type for replacement. The
quality of replacement filters varies considerably. Only
high quality filters should be used to assure most efficient
service. Moparengine oil filters are high quality oil
filters and are recommended.
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To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected for prolonged period.
Ignition Wiring System and Ignition Timing
The ignition cables should be kept clean and properly
connected. Terminals should be fully seated. Do not
remove the nipple assemblies from the coil towers unless
the nipples are damaged or cable testing shows high
resistance or broken insulation. Refer to the Service
Manual for the proper procedure to be followed for
checking ignition cable resistance. Cracked, damaged, or
faulty cables should be replaced.
Because of the plastic body shell on your Viper, ignition
cables should be replaced with the specially designed RFI
cables available at your dealer.
Ignition timing cannot be set on this vehicle.
170 MAINTAINING YOUR VEHICLE
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WARNING!
•Use only refrigerants and compressor lubricants
approved by the manufacturer for your air condi-
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other
unapproved refrigerants or lubricants can cause
the system to fail, requiring costly repairs. Refer
to Section 3 of the Warranty Information book for
further warranty information.
•The air conditioning system contains refrigerant
under high pressure. To avoid risk of personal
injury or damage to the system, adding refrigerant
or any repair requiring lines to be disconnected
should be done by an experienced repairman.
Refrigerant Recovery and Recycling
R-134a Air Conditioning Refrigerant is a hydrofluorocar-
bon (HFC) that is endorsed by the Environmental Pro-
tection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by dealers or other service facilities
using recovery and recycling equipment.
NOTE:Use only manufacturer approved A/C System
Sealers, Stop Leak Products, Seal Conditioners, Compres-
sor Oil, or Refrigerants.
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All power steering pumps have a dipstick. Fluid level
should be maintained at the proper level indicated on the
dipstick. If necessary, add fluid to restore to the proper
indicated level. With a clean cloth, wipe any spilled fluid
from all surfaces. Only petroleum fluids specially formu-
lated for minimum effect on the rubber hoses should be
used. Use only the manufacturer’s recommended fluid.
Refer to Recommended Fluids, Lubricants and Genuine
Parts for the correct fluid type.
Body Lubrication
Locks and all body pivot points, including such items as
seat tracks, doors, liftgate and hood hinges, should be
lubricated periodically to assure quiet, easy operation
and to protect against rust and wear. Prior to the appli-
cation of any lubricant, the parts concerned should be
wiped clean to remove dust and grit; after lubricating
excess oil and grease should be removed. Particular
attention should also be given to hood latching compo-
nents to insure proper function. When performing otherunderhood services, the hood latch, release mechanism
and safety catch should be cleaned and lubricated.
The external lock cylinders should be lubricated twice a
year, preferably in the fall and spring. Apply a small
amount of a high quality lubricant such as MoparLock
Cylinder Lubricant directly into the lock cylinder.
Front and Rear Suspension Ball Joints
Your vehicle has suspension ball joints that require
periodic servicing. These ball joints should be inspected
whenever servicing a vehicle for other reasons.
Damaged seals should be replaced to prevent leakage or
contamination of the grease. If there is any movement
within the ball joint, the knuckle or control arm must be
replaced. The ball joints are not serviceable by them-
selves.
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Relubrication
Ball joints are lubricated at the factory with a special
grease. They should be regreased at intervals as specified
in the maintenance schedules. When lubricating ball
joints, use only special long life chassis grease, such as
Multi-Mileage Lubricant, intended for this purpose.
Steering Linkage
There are two tie rod end ball joints that require periodic
inspection. The ball joint seals should be inspected when-
ever servicing the vehicle for other reasons. Damaged
seals should be replaced to prevent leakage or contami-
nation of the grease. The seals are not serviceable by
themselves, the entire outer tie rod end needs to be
replaced.
Lubrication
The tie rod ends are lubricated for life. No periodic
lubrication is required.
Body Mechanism Lubrication
Body and other operating mechanisms and linkages
should be inspected, cleaned, and lubricated, as required,
to maintain ease of operation and to provide protection
against rust and wear.
Before the application of any lubricant, the parts con-
cerned should be wiped clean to remove dust and grit;
after lubricating, excess oil or grease should be removed.
Hood Latch
When performing other underhood services, the hood
latch release mechanism and safety catch should be
inspected, cleaned, and lubricated.
It is important to maintain proper lubrication to insure
that the hood mechanisms work properly and safely.
Multi-Purpose Lubricant, NLGI Grade 2, should be ap-
plied sparingly to all pivot and sliding contact areas.
180 MAINTAINING YOUR VEHICLE
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•Rubber bushings
•Starter bearing
•Throttle control cable
•Water pump bearings
Windshield Washers
The fluid reservoir in the right side engine compartment
should be checked for fluid level at regular intervals. Fill
the reservoir with windshield antifreeze (not radiator
antifreeze).
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 exhaust fumes can be detected inside the vehicle; or
when the underside or side of the vehicle is damaged;have a competent mechanic inspect the complete exhaust
system and adjacent body areas for broken, damaged,
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.
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide which is colorless and odorless. Breathing
it can make you unconscious and can eventually
poison you.
182 MAINTAINING YOUR VEHICLE