FUEL, LUBRICANTS AND COOLANT
71
9/275, 9/305, 12/250, 17/240, 21/220
Cummins Inc. primary recommendation is for the use of 15W-40
multigrade for normal operation at ambient temperatures above -15°C
(5°F). The use of multigrade oil reduces deposit formation, improves
engine cranking in low temperature conditions, and increases engine
durability by maintaining lubrication during high temperature operating
conditions. Since multigrade oils have been shown to provide
approximately 30 percent lower oil consumption than monograde oils,
it is important to use multigrade oils, to be certain the engine will meet
applicable emissions requirements. While the preferred viscosity grade
is 15W-40, lower viscosity multigrades can be used in colder climates.
See the accompanying chart.
Oils meeting API CJ-4 and a 10W-30 viscosity grade,
must
meet a
minimum high/temperature/high shear viscosity of 3.5 cP and ring wear
/ liner wear requirements of Cummins® tests. Thus, they can by used
over a wider temperature range than 10W-30 oils meeting older API
performance classifications. As these oils will have directionally thinner
oil films than 15W-40 oils. Some oil suppliers might claim better fuel
economy for these oils. Cummins Inc. can neither approve nor
disapprove any product
not
manufactured by Cummins Inc. These
claims are between the customer and oil supplier. Obtain the oil
supplier's commitment that the oil will give satisfactory performance in
Cummins® engines, or do
not
use the oil.
An example of the API service symbols are shown in the
accompanying illustration. The upper half of the symbol displays the
appropriate oil categories.
The centre section identifies the SAE oil viscosity grade.
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, hours 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.
See the Engine Maintenance Schedule Section to determine which oil
drain interval to use for the application.
Any warranty claims that could be oil quality related
must
be
accompanied by complete service history details of the following, prior
to any warranty assessment being undertaken:
•
Oil type, specifications and supplier
•
Oil drain intervals
•
Injector, valves and engine brake lash adjustments
•
Oil filter type and supplier
•
Application duty cycle
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. Extending the oil and filter change
interval beyond the recommendations will decrease engine life due to
factors such as corrosion, deposits, and wear. Refer to the Engine
Maintenance Schedule Section
CAUTION: An SAE 10W-30 designation on a product is a viscosity
designation only. This designation alone does not imply that the
product meets Cummins® requirements. Only 10W-30 oils with
diesel performance credentials listed in table above can be used in
Cummins® Engines if the reduced ambient temperature indicated in
chart above is observed. Only 10W-30 oils meeting CES 20081 (API
CJ-4) can be used in the ambient temperature range similar to 15W-
40 oils.
Temperature °F
All Seasons
All Seasons
Winter Conditions
Winter Conditions
Arctic Conditions
Temperature °C
NOTE:
The responsibility is with the owner. If recommendations are
ignored, warranty could be affected.
NOTE:
A.C.E.A. = Association des Constructeurs Européen
d'Automobiles, A.P.I. =American Petroleum Institute and C.E.S. =
Cummins® Engineering Standard.
CAUTION: Extending the oil and filter change interval beyond the
recommendations will decrease the engine life due to factors such as
corrosion, deposits, and wear.
NOTE:
The responsibility is with the owner. If recommendations are
ignored, warranty could be affected.
API: American Petroleum Institute
CES: Cummins® Engineering Standard
NOTE:
A lubricating oil that meets the American Petroleum Institute
(API) performance classification CJ-4 may not meet the CES 20081
requirement. Always make sure the lubricating oil used meets the
CES 20081 requirement, in addition to the API performance
classification CJ-4.
Oil Additives in Used Oil
Active Additive
Active Additive
Kilometres (Miles)/Hours ->
Additive Conte
n
t ->
