McCormick XTX

Differential fluid capacity & service interval

McCormick XTX differential fluid capacity ranges from 2 to 6 liters. Service intervals include checks at 250 hours and changes at 250 or 1000 hours. The data covers 12 configurations.

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

TypeSpecifications
  • XTX145, Tier3 (2009-2013)
  • Front
  • Use: Normal
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Check 250 hours
  • Change 1000 hours
  • XTX145, Tier3 (2009-2013)
  • Front
  • Use: Initial service
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Change 250 hours
  • XTX165, Tier3 (2009-2013)
  • Front
  • Use: Normal
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Check 250 hours
  • Change 1000 hours
  • XTX165, Tier3 (2009-2013)
  • Front
  • Use: Initial service
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Change 250 hours
  • XTX185, Tier3 (2009-2013)
  • Front
  • Use: Normal
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Check 250 hours
  • Change 1000 hours
  • XTX185, Tier3 (2009-2013)
  • Front
  • Use: Initial service
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Change 250 hours
  • XTX185, tier2 (2005-2009)
  • Front
  • Use: Normal
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Check 250 hours
  • Change 1000 hours
  • Code: (4x4)
  • XTX185, tier2 (2005-2009)
  • Front
  • Use: Initial service
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Change 250 hours
  • Code: (4x4)
  • XTX200, tier2 (2005-2009)
  • Front
  • Use: Normal
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Check 250 hours
  • Change 1000 hours
  • Code: (4x4)
  • XTX200, tier2 (2005-2009)
  • Front
  • Use: Initial service
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Change 250 hours
  • Code: (4x4)
  • XTX215, tier2 (2005-2009)
  • Front
  • Use: Normal
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Check 250 hours
  • Change 1000 hours
  • Code: (4x4)
  • XTX215, tier2 (2005-2009)
  • Front
  • Use: Initial service
  • Capacity 2,2 liter (Independent Front Axle)
  • Capacity 6 liter (MFD)
  • Change 250 hours
  • Code: (4x4)

Additional Notes

  • The McCormick XTX front differential specifications list two distinct axle configurations with significantly different fluid capacities: the Independent Front Axle holds 2.2 liters, while the Mechanical Front Drive (MFD) axle holds 6 liters. The nearly threefold difference reflects the greater mechanical complexity and housing volume of the MFD unit compared to the independent setup.
  • Across all XTX variants and both emission tiers covered in these specifications, the normal-use change interval for the front differential is set at 1000 hours. A fluid level check is also specified at 250 hours under normal use, serving as a mid-interval inspection point between drain cycles.
  • An initial service change interval of 250 hours applies to all listed XTX models regardless of axle type. At this early stage, a fluid change is specified without a preceding check interval, distinguishing the initial service schedule from the ongoing normal-use pattern.
  • The XTX185 is the only model in these specifications to appear under both Tier 2 (2005-2009) and Tier 3 (2009-2013) emission standards. Despite the engine tier difference, the front differential fluid capacities and service intervals remain identical across both generations of the XTX185.
  • The Tier 2 variants covered here span the XTX185, XTX200, and XTX215, all produced during 2005-2009. The Tier 3 variants cover the XTX145, XTX165, and XTX185, produced during 2009-2013. The front differential service specifications are uniform across all six model configurations.
  • The 250-hour check interval under normal use represents a fluid level verification rather than a full drain-and-fill service. Periodic level checks between full changes are standard practice for differential housings, where gradual fluid loss through seals can go undetected without scheduled inspection.

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