NOTE:Most vehicles are operated under the conditions
listed for ScheduleB.
Engine Oil Selection
1. Engine Oil Quality
Use only oils conforming to API Ser-
vice CI-4. A sulfated ash limit is speci-
fied for lubrication oil used in Cum-
mins engines. Oils with a high ash
content may produce deposits on
valves that can progress to guttering
and valve burning. A maximum sul-
fated ash content of 1.85 mass % is recommended for all
oil used in the engine.
2. Engine Oil Viscosity (SAE Grade)
The proper SAE viscosity of engine oil for the expected
ambient temperature range should be selected, as indi-
cated in the following chart:NOTE:The same oil change interval is to be followed
for synthetic oil as for petroleum based oil. Also, syn-
thetic oil must meet the same performance specifications
as petroleum oil.
MAINTAINING YOUR VEHICLE 345
7
Trailer Towing......................81,296
Modifications/Alterations, Vehicle............. 8
Mopar Parts.........................339,428
Multi-Function Control Lever............... 118
New Vehicle Break-In Period................ 67
Noise Control
Maintenance.......................... 375
Tampering Prohibited................... 376
Noise Emission Warranty...............374,376
Occupant Restraints....................... 33
Odometer..........................167,168
Trip .............................167,168
Off-Pavement Driving.................... 310
Off-Road Driving........................ 310
Oil, Engine............................ 398
Capacity............................ 397
Change Interval....................... 344Dipstick............................. 343
Disposal............................ 348
Filter.........................343,346,398
Pressure Gauge....................... 164
Recommendation...................... 345
Viscosity............................ 345
Oil Filter, Change........................ 346
Onboard Diagnostic System................ 339
Opener, Garage Door..................... 134
Operating Precautions.................... 339
Outside Rearview Mirrors.................. 79
Overhead Console....................127,128
Overhead Travel Information Center.......... 128
Owner’s Manual........................ 429
Parking Brake.......................... 255
Passenger Airbag On/Off Switch............. 51
Passing Light........................... 119
Pedals, Adjustable....................... 123
440 INDEX
