John Deere 8020 series

Differential fluid capacity & service interval

John Deere 8020 series differential fluid capacity is 13,6 liters. Service intervals include checking at 250 hours and changing at 1500 hours. The data covers 4 configurations.

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

TypeSpecifications
  • 8120 (2002-2005)
  • Front
  • Use: Normal
  • Capacity 13,6 liter
  • Check 250 hours
  • Change 1500 hours
  • Code: Standard MFWD
  • 8220 (2002-2005)
  • Front
  • Use: Normal
  • Capacity 13,6 liter
  • Check 250 hours
  • Change 1500 hours
  • Code: Standard MFWD
  • 8320 (2002-2005)
  • Front
  • Use: Normal
  • Capacity 13,6 liter
  • Check 250 hours
  • Change 1500 hours
  • Code: Standard MFWD
  • 8420 (2002-2005)
  • Front
  • Use: Normal
  • Capacity 13,6 liter
  • Check 250 hours
  • Change 1500 hours
  • Code: Standard MFWD

Additional Notes

  • The John Deere 8020 Series front differential holds 13.6 liters of fluid across all four models in the lineup, covering the 8120, 8220, 8320, and 8420 produced from 2002-2005.
  • A 13.6-liter capacity is consistent with a full service fill figure, representing the total volume the front differential housing holds during a complete drain and refill procedure.
  • The check interval for the front differential fluid is set at 250 hours under normal use conditions, meaning fluid level verification is due well before any change is required.
  • The change interval is specified at 1500 hours under normal use conditions, placing the drain-and-refill service at six times the frequency of the routine level check.
  • All four models in the 8020 Series share identical front differential fluid specifications for capacity, check interval, and change interval, indicating no variation across the engine or power tier differences represented by the 8120 through 8420 designations for the 2002-2005 production years.

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