John Deere CD4039DF008 - Manual (Page 37)

Fuels, Lubricants and Coolant
DX,COOL6 –19–18MAR96–1/1
OPERATING IN WARM TEMPERATURE
CLIMATES
John Deere engines are designed to operate using glycol
base engine coolants.
Always use a recommended glycol base engine coolant,
even when operating in geographical areas where freeze
protection is not required.
IMPORTANT: Water may be used as coolant in
emergency situations only.
Foaming, hot surface aluminum and
iron corrosion, scaling, and cavitation
will occur when water is used as the
coolant, even when coolant
conditioners are added.
Drain cooling system and refill with
recommended glycol base engine
coolant as soon as possible.
10-5
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