Jeep 2013 Grand Cherokee SRT8 Owner's Manual page 567

Change Engine Oil
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
Refer to "Maintenance Schedule" for further information.
NOTE: Under no circumstances should oil change in-
tervals exceed 6,000 miles (10 000 km) or six months,
whichever occurs 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.
The manufacturer recommends the use of a full synthetic
SAE 0W-40 engine oil or equivalent.
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
I n f o r m a t i o n P r o v i d e d b y :
MAINTAINING YOUR VEHICLE 565
CAUTION!
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends
API Certified engine oils.
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