Maintenance
Lubricants and operating fluids
Fig. 90: KD recommended TAN / TBN evolution
A
Operation forbidden zone C Safe operating zone
x Operating hours y2 Iron (ppm)
y1 TAN-TBN (mgKOH / g)
1 TBN 3 Iron
2 TAN
Lubricating oil change intervals and monitoring
Lubricating oil change intervals
Standard change interval for the lubricating oil is mentioned in the technical documentation
accompanying the diesel engine (see “maintenance schedule” section). Additionally, the change
interval is also influenced by the oil initial quality and the severity of the operation.
The following types of operation are considered as “severe”:
– Frequent cold starts
– Extended non operated period (standstill)
– Severe ambient conditions:
· Extreme operating temperatures (cold or hot)
· High humidity
· Dust
Always refer to the technical documentation of the diesel engine to determine the lubricating
oil change interval. In most of the case, the following definition applies: Change interval = Basic
oil change interval * Oil category factor * Sulfur content factor
Where:
– Standard oil change interval is indicated in the technical documentation of the diesel
engine.
– Oil category factor is defined in the table on KD lubricating oil category factors (see: tab. 37,
page 153).
KD62V12 33521030301_8_1 EN_US 2022-09
© 2022 by Kohler Co. All rights reserved.
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