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DX,COOL3 –19–27OCT05–1/2
Diesel Engine Coolant
The engine cooling system is filled to provide
year-round protection against corrosion and cylinder
liner pitting, and winter freeze protection to -37°C
(-34°F). If protection at lower temperatures is required,
consult your John Deere dealer for recommendations.
John Deere COOL-GARD Prediluted Coolant is
preferred for service.
John Deere COOL-GARD Prediluted Coolant is
available in a concentration of either 50% ethylene
glycol or 55% propylene glycol.
Additional recommended coolants
The following engine coolant is also recommended:
• John Deere COOL-GARD Coolant Concentrate in a
40% to 60% mixture of concentrate with quality
water.
John Deere COOL-GARD coolants do not require use
of supplemental coolant additives, except for periodic
replenishment of additives during the drain interval.
Other fully formulated coolants
Other fully formulated low silicate ethylene or
propylene glycol base coolants for heavy-duty engines
may be used if they meet one of the following
specifications:
• ASTM D6210 prediluted (50%) coolant
• ASTM D6210 coolant concentrate in a 40% to 60%
mixture of concentrate with quality water
Coolants meeting ASTM D6210 do not require use of
supplemental coolant additives, except for periodic
replenishment of additives during the drain interval.
Coolants requiring supplemental coolant additives
Other low silicate ethylene glycol base coolants for
heavy-duty engines may also be used if they meet one
of the following specifications:
• ASTM D4985 ethylene glycol base prediluted (50%)
coolant
• ASTM D4985 ethylene glycol base coolant
concentrate in a 40% to 60% mixture of concentrate
with quality water
Coolants meeting ASTM D4985 require an initial
charge of supplemental coolant additives, formulated
for protection of heavy duty diesel engines against
corrosion and cylinder liner erosion and pitting. They
also require periodic replenishment of additives during
the drain interval.
Other coolants
It is possible that neither John Deere COOL-GARD nor
coolants meeting one of the coolant standards listed
above is available in the geographical area where
service is performed. If these coolants are unavailable,
use a coolant concentrate or prediluted coolant with a
quality additive package that provides cylinder liner
cavitation protection and protects the cooling system
metals (cast iron, aluminum alloys, and copper alloys
such as brass) from corrosion.
The additive package must be part of one of the
following coolant mixtures:
• ethylene glycol or propylene glycol base prediluted
(40% to 60%) coolant
• ethylene glycol or propylene glycol base coolant
concentrate in a 40% to 60% mixture of concentrate
with quality water
Water quality
COOL-GARD is a trademark of Deere & Company
10-13
080706
PN=41
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