Kohler KD62V12 Operation And Maintenance Manual

Maintenance
Lubricants and operating fluids
These quality levels help to determine the lubricating oil change interval. They indicate the oil
category factor to be used in relationship to the change interval mentioned in the technical
documentation accompanying your diesel engine.
Category Oil category factor Comment
Oil category 1 - Prohibited
Oil category 2 1 The change interval is conserved.
Oil category 2.1 1 The change interval is conserved.
Oil category 3 2 The change interval can be extended by two times.
Oil category 3.1 2 The change interval can be extended by two times.
Tab. 32: KD lubricating oil category factors
Lubricating oil requirements
Generally speaking, lubricating oils fulfilling the following criteria can be used in Kohler KD
diesel engines. However, a careful check of the characteristics must be undertaken. This
measure ensures that the criteria mentioned in the following sections are explicitly fulfilled
before considering the oil as approved for use in KD diesel engines.
Parameter
Unit Expected value Methods
Without EATS With EATS
Visual appearance - Clear Clear Visual
Viscosity @ minimum temperature mm
2
/ s 3500 3500 DIN 51562
Viscosity @ operation tempera‐
ture
mm
2
/ s 10.0 - 14.8 10.0 - 14.8 DIN 51562
VI-index - > 145 > 155 ISO 2909
High temperature - High shear cP 3.5 - 4.3 3.5 - 4.3 CEC L36-A-90
Ignition point °C > 220 > 220 ISO 2592
Total base number mg KOH / g > 10 > 8 ISO 3771
Shear stability % 10 10 ASTM D6278
NOAK (1 hour @ 250 °C (482 °F)) % < 10 < 10 CEC L-040-93
Ash (sulfur) maximum g / 100 g 1.9 0.95 DIN 51575
Tab. 33: KD lubricating oil minimum requirements
Lubricating oil viscosity grade
The viscosity grade is measured against SAE standards. The first number indicates oil viscosity
at start-up, on cold conditions (W stands for Winter); the second number indicates oil viscosity
at operating conditions (usually considered at 100 °C (212 °F)).
The lubricating oils presenting these viscosity grades are approved for use in Kohler KD diesel
engines:
148
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KD62V12 33521030301_8_1 EN_US 2022-09

Kohler KD62V12 Specifications

General

Brand	Kohler
Model	KD62V12
Category	Engine
Language	English