Jeep Grand Cherokee User Manual page 101

If any of these apply to you, then change your
engine oil every 5 000 km (3,000 miles) or 3
months, whichever comes first and follow the
maintenance recommendations in "Maintenance
Schedule B."
• Day or night temperatures are below 0°C (32°F)
• Stop and go driving
• Extensive engine idling
• Driving in dusty conditions
• Short trips of less than 16 km (10 miles)
• More than 50% of your driving is at sustained
high speeds during hot weather, above 32°C
(90°F)
• Trailer towing
• Taxi, Police, or delivery service (Commercial
Service)
• Off-road or desert operation
If none of these apply to you, then change your
engine oil every 12 000 km (7,500 miles) or 6
months, whichever comes first.
Engine Oil Selection — Gasoline Engines
For best performance and maximum protection
for all engines under all types of operation, you
should only select engine oils that meet the oil
quality certification and viscosity requirements as
follows:
American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol on the
front of an oil con-
tainer means that the
oil has been certified
by the American Pe-
troleum
(API) to meet all the
lubrication
ments specified by
the manufacturer.
Engine Oil Viscosity Chart
The proper SAE viscosity grade of engine oil
should be selected based on the following recom-
mendation and be within the operating tempera-
ture shown in the engine oil viscosity chart.
4.0L Engines
Institute
require-
4.7L/4.7L HO Engines
Engine Oil Selection — Diesel Engines
Use only the manufacturer's recommended fluid.
Refer to Recommended Fluids, Lubricants, and
Genuine Parts for correct fluid type.
Materials Added to Engine Oils
The manufacturer does not recommend the ad-
dition of any additive to the specified engine oil.
Disposing of Used Engine Oil
Care should be taken in disposing of the used
engine oil from your vehicle. Used oil, indiscrimi-
nately discarded, can present a problem to the
environment. Contact your authorized dealer, or
governmental agency for advice on how and
where they can be safely discarded in your area.
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