Perkins 1106E Operation And Maintenance Manual page 43

Illustration 20
(Y) TBN by "ASTM D2896"
(X) Percentage of fuel sulfur by weight
(1) TBN of new oil
(2) Change the oil when the TBN deteriorates to 50 percent of
the original TBN.
Use the following guidelines for fuel sulfur levels that
exceed 1.5 percent:
•
Choose an oil with the highest TBN that meets one
of these classifications: EMA DHD-1 and API CH-4.
•
Reduce the oil change interval. Base the oil
change interval on the oil analysis. Ensure that the
oil analysis includes the condition of the oil and
a wear metal analysis.
Excessive piston deposits can be produced by an oil
with a high TBN. These deposits can lead to a loss
of control of the oil consumption and to the polishing
of the cylinder bore.
NOTICE
Operating Direct Injection (DI) diesel engines with fuel
sulphur levels over 0.5 percent will require shortened
oil change intervals in order to help maintain adequate
wear protection.
Table 3
Percentage of Sulfur in the
fuel
Lower than 0.5
0.5 to 1.0
Greater than 1.0
Lubricant Viscosity Recommendations
for Direct Injection (DI) Diesel Engines
The proper 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.
This document has been printed from SPI². Not for Resale
g00799818
Oil change interval
Normal
0.75 of normal
0.50 of normal
Refer to Table 4 (minimum temperature) in order to
determine the required oil viscosity for starting a cold
engine.
Refer to Table 4 (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 4
Engine Oil Viscosity
EMA LRG-1 Ambient Temperature
API CH-4
Minimum
Viscosity Grade
SAE 0W20 −40 °C (−40 °F)
SAE 0W30 −40 °C (−40 °F)
SAE 0W40 −40 °C (−40 °F)
SAE 5W30 −30 °C (−22 °F)
SAE 5W40 −30 °C (−22 °F)
SAE 10W30 −20 °C (−4 °F)
SAE 15W40 −10 °C (14 °F)
Synthetic Base Stock Oils
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 the oil change intervals for any type of
oil.
43
Maintenance Section
Lubricant Specifications
Maximum
10 °C (50 °F)
30 °C (86 °F)
40 °C (104 °F)
30 °C (86 °F)
40 °C (104 °F)
40 °C (104 °F)
50 °C (122 °F)
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