Ram Trucks 2007 3500 (Diesel) - Manual (Page 416)

• Extensive operation at high engine speeds (greater
than 2900 rpm) and loads (greater than 70% throttle).
If ANY of these apply to you, then change your engine oil
at every interval shown in schedule
ЉBЉ of the ЉMainte-
nance Schedules
Љ section of this manual.
If none of these apply to you, then change your engine oil
at every interval shown on schedule
ЉAЉ of the ЉMainte-
nance Schedules Љ section of this manual.
NOTE: Most vehicles are operated under the conditions
listed for Schedule
ЉB.Љ
Change Engine Oil (6.7L Diesel Engine)
Follow the 6.7L Diesel Maintenance Schedule for recom-
mended engine oil change intervals.
Engine Oil Selection (5.9L Diesel Engine)
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.
416 MAINTAINING YOUR VEHICLE