Kohler KD62V12 Operation And Maintenance Manual page 127

Operation and Maintenance Manual
Fig. 80: TBN curves according to sulphur rate
1 TBN - Index of basicity
2 Sulfur content part per million
3 Engine oil must be changed as soon as
possible
Viscosity grade
Information
u Monograde lube oils are prohibited.
Following viscosity classes are permitted
– 5W40
– 10W40
– 15W40 with coolant preheating system
The selection of lubricant viscosity is based on the SAE classification (Society of Automotive Engi-
neers).
Excessive viscosity can result in starting difficulties. If the viscosity is too low, this can compromise
the lubricating efficiency.
Difficulty factors
Difficulty factors can be:
– Frequent cold starts
– Environmental influences
Operating temperature
•
Dust
•
High humidity
•
Long standstill times
•
If there are difficulty factors or difficult usage conditions, the oil change and filter change must:
– be performed according to oil change interval
Oil change interval
The basic change interval is defined in the maintenance tables. The change intervals are defined
as follows:
Basic oil change interval * Factor oil category * Factor sulfur content = change interval
KD62V12 33521030301_6_1 EN_US
2019-02
4
5
© 2019 by Kohler Co. All rights reserved.
Lubricants and operating fluids
Recommended Index of basicity
(mgKOH/g)
Minimum Index of basicity (mgKOH/g)
Maintenance
127