Never operate the engine with oil level below the “ADD”
mark or above the upper “SAFE” mark.
Change Engine Oil (6.7L Diesel Engine)
Follow the 6.7L Diesel Maintenance Schedule for recom-
mended engine oil change intervals.
Engine Oil Selection (6.7L Diesel Engines)
For best performance and maximum protection under all
types of operating conditions, the manufacture only
recommends engine oils that are API CJ-4 certified and
meet the requirements of DaimlerChrysler. Use Mopar or
an equivalent oil meeting the specification MS-10902.
Products meeting Cummins CES 20081 may also be used.
The identification of these engine oils are typically lo-
cated 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 Petro-
leum Institute (API). The manufacture
only recommends API Certified en-
gine oils.
408 MAINTAINING YOUR VEHICLE
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