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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).
John Deere COOL-GARD
The following engine coolant is preferred for service:
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John Deere COOL-GARD Prediluted Coolant
The following engine coolant is also recommended:
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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.
Ethylene glycol base 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:
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ASTM D6210 prediluted coolant
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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.
Other low silicate ethylene glycol base coolants for heavy-duty engines may also be used if they meet one of the following specifications:
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ASTM D5345 prediluted coolant
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ASTM D4985 coolant concentrate in a 40 to 60% mixture of concentrate with quality water
Coolants meeting ASTM D5345 or ASTM D4985 require an initial charge of supplemental coolant
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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.
Propylene glycol base coolants
Fully formulated low silicate propylene glycol base coolants for heavy-duty engines may be used if they meet one of the following specifications:
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ASTM D6211 prediluted coolant
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ASTM D6211 coolant concentrate in a 40 to 60% mixture of concentrate with quality water
Coolants meeting ASTM D6211 do not require use of supplemental coolant additives, except for periodic replenishment during the drain interval.
Freeze protection
A 50% mixture of ethylene glycol engine coolant in water provides freeze protection to -37°C (-34°F).
A 50% mixture of propylene glycol engine coolant in water provides freeze protection to -33°C (-27°F).
If protection at lower temperatures is required, consult your John Deere dealer for recommendations.
Water quality
Water quality is important to the performance of the cooling system. Distilled, deionized, or demineralized water is recommended for mixing with ethylene glycol and propylene glycol base engine coolant concentrate.
IMPORTANT:
Do not use cooling system sealing additives or antifreeze that contains sealing additives.
IMPORTANT:
Do not mix ethylene glycol and propylene glycol base coolants.
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