Kohler KD62V12 Operation And Maintenance Manual page 126

Maintenance
Lubricants and operating fluids
Lube Oil Category 3 minimum requirements
Parameter
Visual appearance
Viscosity at min. Temp.
Viscosity at operation
temp.
VI-Index
Height Temp. High
Shear
Ignition point
Total base number
Shear stability
NOACK (1h at 250°C)
Ash (Sulphur) max.
Ash (Sulphur) max.
Tab. 33: Oil category 3 characteristic requirements
Selecting the engine oil
Fuel sulfur content influence
The following table is intended to help select the right engine oil based on the total base number
(TBN) and according to the sulfur rate.
This measurement value is important for reducing combustion gases that are influenced by the
sulfur content in the fuel.
Ensure that the index of basicity TBN (Total Base Number) is >8 mg mgKOH/g and the soot
(SiO) is <3%
The following measures must be taken in the case of diesel fuels with a sulfur content
above 0.5%:
– Use an engine oil with a total base number (TBN) of more than 10 mgKOH/g in case of high
sulphur rate (0.5 < Sulfur ratio % <1).
– Shorten the oil drain intervals according to chapter "Oil change interval".
– Confirm oil change interval by oil analyzes.
Information
u 0,5% of sulfur = 5000 ppm and 1% of sulfur = 10000 ppm
126
Unit Value Engine oil
without exhaust
after treatment
clear
mm2/s 3500
mm2/s 10.0 - 16,0
> 145
cP 3.5 - 4.3
°C > 220
mg KOH/g > 12
% 10%
% 10%
g/100g 1.9
g/100g 1.9
© 2019 by Kohler Co. All rights reserved.
Operation and Maintenance Manual
Value Engine oil
with exhaust after
treatment
clear
3500
10.0 - 16,0
> 155
3.5 - 4.3
> 220
> 9
10%
10%
0.95
0.6
KD62V12 33521030301_6_1 EN_US
Method
Visual
DIN 51562
DIN 51562
i.A. DIN ISO 2909
CEC L-36-A-90
DIN ISO 2592
DIN ISO 3771
ASTM D6278
CEC-L-040-93
DIN 51575
DIN 51575
2019-02