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SERVICING AND MAINTENANCE 409
the vehicle is unused for an extended period of
time, incorrect oil, extended oil changes or
extended idling. If the engine continues to tick
or if the Malfunction Indicator Light (MIL) comes
on, see the nearest authorized dealer.
Engine Oil Selection — Diesel Engine
For best performance and maximum protection
under all types of operating conditions, the
manufacturer only recommends engine oils
that are API CK-4 certified and meet the
requirements of the manufacturer. Use Mopar®
or an equivalent oil meeting the manufacturer
Material Standard MS-10902. Products
meeting Cummins® CES 20081 may also be
used. The identification of these engine oils are
typically located on the back of the oil container.
American Petroleum Institute (API) Engine
Oil Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends API
Certified engine oils.
This symbol certifies 0W-20, 5W-20, 0W-30,
5W-30 and 10W-30 engine oils.
For diesel engines, oils with a high ash content
may produce damaging deposits on cylinder
head valves and/or after treatment system
damage. A maximum sulfated ash content of
1.00 mass % is recommended for all oil used in
the engine.
The same oil change interval is to be followed
for synthetic oil as for petroleum-based oil. Also,
synthetic oil must meet the same performance
specifications as petroleum oil.
Synthetic Engine Oils
You may use synthetic engine oils provided the
recommended oil quality requirements are met,
and the recommended maintenance intervals
for oil and filter changes are followed.
Synthetic engine oils which do not have both the
engine oil certification mark and the correct SAE
viscosity grade number should not be used.
Materials Added To Engine Oil
The manufacturer strongly recommends
against the addition of any additives (other than
leak detection dyes) to the 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
an 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.
Engine Oil Filter Selection
A full-flow type disposable oil filter should be
used for replacement. The quality of
replacement filters varies considerably. Only
high quality Mopar® certified filters should be
used.
CAUTION!
Do not use chemical flushes in your engine oil
as the chemicals can damage your engine.
Such damage is not covered by the New
Vehicle Limited Warranty.
8
21_DJD2_OM_EN_USC_t.book Page 409
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