42 SEBU8121
Maintenance Section
Refill Capacities
Table 6
Percentage of Sulfur in
the fuel
Oil change interval
Lower than 0.5 Normal
0.5 to 1.0
0.75 of normal
Greater than 1.0 0.50 of normal
Lubricant Viscosity Recommendations
for Direct Injection (DI) Diesel Engines
The correct SAE viscosity grade of oil is determined
by the minimum ambient temperature during
cold engine start-up, and the maximum ambient
temperature during engine operation.
Refer to Table 7 (minimum temperature) in order to
determine the required oil viscosity for starting a cold
engine.
Refer to Table 7 (maximum temperature) in order to
select the oil viscosity for engine operation at the
highest ambient temperature that is anticipated.
Generally, use the highest oil viscosity that is
available to meet the requirement for the temperature
at start-up.
Table 7
Engine Oil Viscosity
Ambient Temperature
EMA LRG-1
API CH-4
Viscosity Grade
Minimum Maximum
SAE 0W20 −40 °C (−40 °F) 10 °C (50 °F)
SAE 0W30 −40 °C (−40 °F) 30 °C (86 °F)
SAE 0W40 −40 °C (−40 °F) 40 °C (104 °F)
SAE 5W30 −30 °C (−22 °F) 30 °C (86 °F)
SAE 5W40 −30 °C (−22 °F) 40 °C (104 °F)
SAE 10W30 −20 °C (−4°F) 40 °C (104 °F)
SAE 15W40 −10 °C (14 °F) 50 °C (122 °F)
Synthetic Base Stock Oil
Synthetic base oils are acceptable for use in
these engines if these oils meet the performance
requirements that are specified for the engine.
Synthetic base oils generally perform better than
conventional oils in the following two areas:
•
Synthetic base oils have improved flow at low
temperatures especially in arctic conditions.
•
Synthetic base oils have improved oxidation
stability especially at high operating temperatures.
Some synthetic
base oils have performance
characteristics that enhance the service life of the
oil. Perkins does not recommend the automatic
extending of t
he oil change intervals for any type of
oil.
Re-refined b
ase stock oil
Re-refined base stock oil are acceptable for use in
Perkins engi
nes if these oils meet the performance
requirements that are specified by Perkins.Re-refined
base stock oil can be used exclusively in finished oil
or in a combin
ation with new base stock oil . The US
military specifications and the specifications of other
heavy equipment manufacturers also allow the use of
re-refined
base stock oil that meet the same criteria.
The process that is used to make re-refined base
stock oil sh
ould adequately remove all wear metals
that are in the used oil and all the additives that
are in the used oil. The process that is used to
make re-re
fined base stock oil generally involves the
process of vacuum distillation and hydrotreating the
used oil. Filtering is adequate for the production of
high quali
ty, re-refined base stock oil.
Lubricants for Cold Weather
When an engine is started and an engine is operated
in ambient temperatures below −20 °C (−4°F),use
multigra
de oils that are capable of flowing in low
temperatures.
These oil
s have lubricant viscosity grades of SAE
0W or SAE 5W.
When an en
gine is started and operated in ambient
temperatures below −30 °C (−22 °F), use a synthetic
base stock multigrade oil with an 0W viscosity grade
or with a
5W viscosity grade. Use an oil with a pour
point that is lower than −50 °C (−58 °F).
The numb
er of acceptable lubricants is limited in
cold weather conditions. Perkins recommends the
following lubricants for use in cold weather conditions:
First Choice – Use oil with a n EMA DHD-1
Recommended Guideline. Use a CH-4 oil that has
an API l
icense. The oil should be either SAE 0W20,
SAE 0W30, SAE 0W40, SAE 5W30, or SAE 5W40
lubricant viscosity grade.
Second Choice – Use an oil that has a CH-4
additive package. Although the oil has not been
tested
for the requirements of the API license, the oil
must be either SAE 0W20, SAE 0W30, SAE 0W40,
SAE 5W30, or SAE 5W40.
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