John Deere 6J series

Coolant capacity & service interval

John Deere 6J series coolant capacity ranges from 20 to 25 liters. Service intervals include checking at 10 hours and changing at 2000 hours or 24 months. The data covers 7 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
6110J, -> 001475 (2011-2020)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
6110J, 001478 -> (2011-2020)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
6125J, -> 000631 (2011-2020)
  • Use: Normal
  • Capacity 25 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
6125J, 400001 -> (2011-2020)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
6130J (2011-2020)
  • Use: Normal
  • Capacity 24 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
6145J, -> 001169 (2011-2020)
  • Use: Normal
  • Capacity 25 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
6145J, 001170 -> (2011-2020)
  • Use: Normal
  • Capacity 25 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months

Additional Notes

  • Cooling system capacities across the John Deere 6J series range from 20 to 25 liters, depending on the model and serial number range. The 6110J requires 20 liters, the 6130J requires 24 liters, and the 6125J and 6145J require 25 liters in most configurations.
  • The 6125J presents a notable capacity split tied directly to serial number. Units up to serial number 000631 carry a 25-liter cooling system, while units from serial number 400001 onward are specified at 20 liters, a 5-liter reduction that reflects a difference in engine or cooling system architecture between production runs.
  • The 6110J similarly divides across serial numbers, with units up to 001475 and units from 001478 onward both specified at 20 liters. The capacity is consistent across both production ranges, indicating no change in cooling system volume between those builds.
  • All 6J series models covered share a uniform coolant check interval of every 10 operating hours under normal use conditions. Frequent checks at low hour intervals are standard practice for agricultural equipment operating in variable ambient temperatures and high-load environments.
  • The coolant change interval is consistent across all 6J series models at 2000 operating hours or 24 months, whichever comes first, under normal use conditions. The dual-trigger structure means time elapsed can mandate a change even when the hour threshold has not been reached, which is relevant for lower-utilization machines.
  • The 6145J maintains a 25-liter cooling system capacity across both serial number ranges, from units up to 001169 and from 001170 onward. Unlike the 6125J, no capacity change occurs between production runs of the 6145J.

Other Systems