Jeep 2009 Grand Cherokee SRT - Owner Manual - Manual (Page 355)

NOTE: Under no circumstances should oil change in-
tervals exceed 6,000 miles (10 000 km) or 6 months
whichever comes first.
Engine Oil Selection
For best performance and maximum protection under all
types of operating conditions, the manufacturer only
recommends full synthetic engine oils that meet the
American Petroleum Institute (API) categories of SM or
SM/CF, and meet the requirements of Chrysler Material
Standard MS-10725.
The manufacturer recommends the use of a full synthetic
engine oil, such as Mobil 1
௡ SAE 0W-40 or equivalent.
Engine Oil Viscosity
SAE 0W-40 engine oil is preferred for use within the
operating temperatures shown in the engine oil viscosity
chart. SAE 5W-40 engine oil is also allowed. 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 vis-
cosity chart.
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 “Engine Compart-
ment” in this section.
MAINTAINING YOUR VEHICLE 353
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