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Maintenance
Lubricants and operating fluids
Category
0.5% < S < 1.0%
1.0% < S < 1.5%
Tab. 49: KD fuel sulfur content factors
Fig. 100: KD recommended TBN according to fuel sulfur content
A
Operation forbidden zone
B
Engine oil change to be initiated
x
Fuel sulfur content (ppm)
1
Minimum TBN
TAN ratio
Kohler does not recommend any specific TAN for the engine oil to be used in KD diesel engines.
However, the user must pay a particular attention to the TAN and ensures that the following
criteria are always true: TAN < TBN - 2mgKOH / g.
The following graph represents the influence of the TAN and the TBN on engine wear, repre‐
sented by the quantity of iron found in engine oil.
186
Sulfur content
Comment
factor
1/2
The change interval is divided by two.
1/4
The change interval is divided by four.
© 2023 by Kohler Co. All rights reserved.
C
Safe operating zone
y
Total Base Number (TBN)
2
Recommended TBN
KD62V12A 33521061401_1_1 EN_US
2023-10
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