Drain Intervals for Diesel Engine Coolant
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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