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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 is preferred for service.
If John Deere COOL-GARD is not available, use a low silicate ethylene glycol base coolant concentrate in a 50% mixture of concentrate with quality water.
The coolant concentrate shall be of a quality that provides cavitation protection to cast iron and aluminum parts in the cooling system. John Deere COOL-GARD meets this requirement.
A 50% mixture of ethylene glycol engine coolant in water provides freeze protection to -37°C (-34°F). If protection at lower temperatures is required, consult your John Deere dealer for recommendations.
Water quality is important to the performance of the cooling system. Distilled, deionized, or demineralized
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water is recommended for mixing with ethylene glycol base engine coolant concentrate.
IMPORTANT:
Do not use cooling system sealing additives or antifreeze that contains sealing additives.
Coolant Drain Intervals
Drain the factory fill engine coolant, flush the cooling system, and refill with new coolant after the first 3 years or 3000 hours of operation. Subsequent drain intervals are determined by the coolant used for service. At each interval, drain the coolant, flush the cooling system, and refill with new coolant.
When John Deere COOL-GARD is used, the coolant drain interval is 3 years or 3000 hours of operation.
If COOL-GARD is not used, the drain interval is reduced to 2 years or 2000 hours of operation.
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