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AR-EXP-CUMMINS-07-00 OWNERS MANUAL
Page 32
The use of quality engine lubricating oils, combined with appropriate oil drain and filter change intervals, is a critical factor
in maintaining engine performance and durability.
Cummins Inc. recommends the use of high-quality SAE 15W-40 heavy-duty engine oil, such as Valvoline® Premium
Blue®, which meets performance specifications as listed below.
NOTE
: In areas where CH-4/SJ or CG-4/SH oils are not available, refer to Oil Drain Intervals in Section 2.
A sulfated ash limit of 1.0 mass percent is suggested for optimum valve and piston deposit and oil consumption control.
As the engine oil becomes contaminated, essential oil additives are depleted. Lubricating oils protect the engine as long
as these additives are functioning properly. Progressive contamination of the oil between oil and filter change intervals is
normal. The amount of contamination will vary depending on the operation of the engine, kilometers or miles on the oil,
fuel consumed, and new oil added.
Extending oil and filter change intervals beyond the recommendations will decrease engine life due to factors such as
corrosion, deposits, and wear.
Special “break-in” engine lubricating oils are not recommended for new or rebuilt Cummins engines. Use the same type of
oil during the break-in as is used in normal operation.
The use of low-viscosity oils, such as 10W or 10W-30, can be used to aid in starting the engine and in providing sufficient
oil flow at ambient temperatures below -5°C [23°F]. However, continuous use of low-viscosity oils can decrease engine
life due to wear. Refer to the accompanying chart.
If an engine is operated in ambient temperatures consistently below -23°C [-9°F] and there are no provisions to keep the
engine warm when it is not in operation, use a synthetic CH/SI or CH/SK or higher API classification engine oil with ade-
quate low-temperature properties such as 5W-20 or 5W-30.
The oil supplier is responsible for meeting the performance service specifications represented with its product.
Use low-silicate antifreeze that meets ASTM4985 (GM6038M specification) criteria. Fully formulated coolant must meet
ASTM D-6210/D-6211. Cummins Inc. recommends using either a 50/50 mixture of good-quality water and fully formu-
lated antifreeze, or fully formulated coolant when filling the cooling system.
Good-quality water is important for cooling system performance. Excessive levels of calcium and magnesium contribute to
scaling problems, and excessive levels of chlorides and sulfates cause cooling system corrosion.
Cummins Engineering Stan-
dard Classification (CES)
American Petroleum Institute
Classification (API)
International Classifications Comments
API CD API CE API CG-4/SH ACEA E-1
OBSOLETE. DO NOT
USE.
CES-20075 API CF-4/SG
ACEA E-2 ACEA E-3 JAMA
DH-1
Minimum acceptable oil classi-
fication for midrange engines.
CES-20071 CES-20076 API CH-4/SJ API CH-4 Global DHD-1
Acceptable oil classification
for midrange engines.
CES-20072 CES-20077 API CH-4 ACEA E-5 Global DHD-1
Similar in performance to
CES-20071 but validated un-
der European test standards.
Excellent oil for midrange
engines.
CES-20078 API CI-4/SK API CI-4
Excellent oil for midrange
engines.