TRUCK SERVICE MANUAL
ENGINE
viscosity index improve additive which has a tendency to
GREASE
lose its effectiveness after a short period of use in a high
Cummins Engine Company, Inc., recommends use of
speed engine. These oils should be avoided.
grease meeting the specifications of MIL-G-3545,
excluding those of sodium or soda soap thickeners,
2. Oils which meet the low temperature SAE
Contact lubricant supplier for grease meeting these
viscosity standard (O deg. F [18 deg. C]) carry a suffix
specifications.
"W." Oils that meet the high temperature viscosity SAE
standard (210 deg. F [99 deg. C] ) as well as the low
TEST
TEST PROCEDURE
temperature carry both viscosity ratings example:
High-Temperature Performance
2020W. See Table 182.
Dropping point, deg F
ASTM D 2265
350 min.
Bearing life, hours at 300 deg F
*FTM 331
Table 18-2: Operating Temperatures Vs Viscosity
10,000 rpm
600 min.
Ambient Temperatures
Viscosity
Low-Temperature Properties
ASTM D 1478
10 deg F. [-23 deg. C] and below
See Table 18-3
Start at 0 deg F
15,000 max.
10 to 30 deg. F. [-23 to - 1 deg. C]
1OW
Run at 0 deg F
5,000 max.
20 to 60 deg. F [-7 to 16 deg. C]
20-20W
40 deg. F. [4 deg. C] and above
30
Rust test
ASTM D 1743
Arctic Operations
Pass
For operation in areas where the ambient temperature is
ASTM D 1264
consistently below 10 deg. F [23 deg. C] and there is no
20 max.
provision for keeping engines warm during shutdowns,
Stability
the lubricating oil should meet the requirements in Table
Oil separation, %
18-3.
30 Hours @ 212 deg F
*FTM 321
5 max.
Table 18-3: Arctic Oil Recommendations
Penetration
Worked
ASTM D 217
Parameter
250-300
(Test Method)
Specifications
Bomb Test, PSI Drop
Performance
API class CC/SC
100 Hours
10 max.
Quality Level
API class CC/CD
500 Hours
25 max.
SAE Viscosity Grade
10W-20, 10W-30, 10W-40
Copper, Corrosion
*FTM 5309
Pass
Viscosity @ -30 deg
F 10,000 Centistokes
(ASTM D-445)
Maximum
Dirt Count, Particles/cc
*FTM 3005
25 Micron +
5,000 max.
Pour Point
At least 10 deg
F
75 Micron +
1,000 max.
[6 deg
C]
125 Micron +
None
(ASTM D-97)
below lowest expected
Rubber Swell
*FTM 3603
ambient temperature
10 max.
Ash, sulfated
1.85 wt
% Maximum
*Federal Test Method Standard No
791a.
(ASTM D-874)
CAUTION
Do not mix grease and lubricating oil as damage to
Due to extreme operating conditions, oil change intervals
bearings may result. Excessive lubrication is as harmful
should be carefully evaluated paying particular attention
as inadequate lubrication. After lubricating fan hub,
to viscosity changes and total base number decrease.
replace both pipe plugs. Use of fittings will allow
Oil designed to meet MIL-L-10295-A, which is void, and
lubricant to be thrown out, due to rotate speed.
SAE 5W oils should not be used.
433