Bobcat Excavators

Differential fluid capacity & service interval

Bobcat Excavators differential fluid capacity ranges from 4,3 to 4,6 liters. Service intervals include 100 hours and 1000 hours or 6 months. The data covers 4 configurations.

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

TypeSpecifications
  • E55W, Yanmar 4TNV98-E (2008-2015)
  • Front
  • Use: Normal
  • Capacity 4,6 liter
  • Change 1000 hours/ 6 months
  • E55W, Yanmar 4TNV98-E (2008-2015)
  • Front
  • Use: Initial service
  • Capacity 4,6 liter
  • Change 100 hours
  • E55W, Yanmar 4TNV98-E (2008-2015)
  • Rear
  • Use: Normal
  • Capacity 4,3 liter
  • Change 1000 hours/ 6 months
  • E55W, Yanmar 4TNV98-E (2008-2015)
  • Rear
  • Use: Initial service
  • Capacity 4,3 liter
  • Change 100 hours

Additional Notes

  • The Bobcat E55W with Yanmar 4TNV98-E engine carries a front differential fluid capacity of 4.6 liters, while the rear differential holds a slightly smaller 4.3 liters, reflecting the distinct housing volumes of each axle assembly.
  • Under normal use conditions, both the front and rear differentials share the same change interval of 1,000 hours or 6 months, whichever comes first, a dual-trigger format that accounts for both operational intensity and fluid degradation over time.
  • An initial service interval of 100 hours applies to both the front and rear differentials, a significantly shorter interval than the standard 1,000-hour cycle, consistent with the practice of removing break-in contaminants that accumulate during early mechanical wear.
  • The 0.3-liter difference between the front differential capacity of 4.6 liters and the rear differential capacity of 4.3 liters means the two assemblies require separate fill measurements rather than a single uniform quantity across both service points.
  • The initial service drain at 100 hours applies to both differentials at the same milepost, meaning a single early service event covers the break-in fluid change for the entire differential system on the E55W.

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