vehicle is unused for an extended period of time, incor-
rect 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 FCA US LLC. Use Mopar® or
an equivalent oil meeting FCA 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 — Gas
Engine
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.
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.
American Petroleum Institute (API)
Engine Oil Identification Symbol —
Diesel Engine
This symbol means that the oil has been
certified by the American Petroleum Institute
(API). The manufacturer only recommends
API Certified engine oils.
Oils with a high ash content may produce damaging
deposits on cylinder head valves and/or aftertreatment
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 syn-
thetic oil as for petroleum based oil. Also, synthetic oil
must meet the same performance specifications as
petroleum oil.
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.
Engine Oil Viscosity — Gas Engine
Use Mopar® SAE 0W-40 engine oil approved to FCA
Material Standard MS-12633 such as Pennzoil Ultra
equivalent is recommended for all operating
temperatures.
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 the “Engine Com-
partment” illustration in this section.
Lubricants which do not have both the engine oil certifi-
cation mark and the correct SAE viscosity grade num-
ber should not be used.
Engine Oil Viscosity — Diesel Engine
In ambient temperatures above 0°F (-18°C), we recom-
mend you use SAE 10W-30 engine oil such as Mopar®,
Shell Rotella and Shell Rimula that meets FCA Material
Standard MS-10902 and the API CK-4 engine oil cat-
egory is required. Products meeting Cummins® CES
20081 may also be used. The identification of these
engine oils is typically located on the back of the oil
container.
In ambient temperatures below 0°F (-18°C), we recom-
mend you use SAE 5W-40
synthetic
engine oil such as
Mopar®, Shell Rotella and Shell Rimula that meets FCA
Material Standard MS-10902 and the API CK-4 engine
oil category is required.
CAUTION!
Failure to use SAE 5W-40 synthetic engine oil in
ambient temperatures below 0°F (-18°C) could
result in severe engine damage.
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