Case - IH MXU

Coolant capacity & service interval

Case - IH MXU coolant capacity ranges from 23 to 25 liters. Service intervals include checking at 300 hours and changing at 1200 hours or 24 months. The data covers 5 configurations.

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

TypeSpecifications
MXU100 (2003-2006)
  • Use: Normal
  • Capacity 23 liter
  • Check 300 hours
  • Change 1200 hours/ 24 months
MXU110 (2003-2006)
  • Use: Normal
  • Capacity 23 liter
  • Check 300 hours
  • Change 1200 hours/ 24 months
MXU115 (2003-2006)
  • Use: Normal
  • Capacity 25 liter
  • Check 300 hours
  • Change 1200 hours/ 24 months
MXU125 (2003-2006)
  • Use: Normal
  • Capacity 25 liter
  • Check 300 hours
  • Change 1200 hours/ 24 months
MXU135 (2003-2006)
  • Use: Normal
  • Capacity 25 liter
  • Check 300 hours
  • Change 1200 hours/ 24 months

Additional Notes

  • The Case-IH MXU cooling system capacities fall into two groups across the 2003-2006 model range: the MXU100 and MXU110 share a 23-liter capacity, while the MXU115, MXU125, and MXU135 each require 25 liters.
  • A 23-liter cooling system fill, as seen on the MXU100 and MXU110, represents a substantial volume consistent with a multi-cylinder agricultural diesel engine where the coolant circuit spans the engine block, cylinder head, and radiator.
  • The 25-liter capacity on the MXU115 through MXU135 reflects the larger displacement or extended cooling circuit associated with the higher-output variants in the lineup.
  • All five configurations share an identical check interval of 300 hours under normal use conditions, meaning coolant level and condition are to be inspected at that frequency regardless of model variant.
  • The coolant change interval across all MXU variants is set at 1200 hours or 24 months under normal use conditions, whichever comes first. The dual-trigger structure accounts for both high-hour seasonal operation and lower-utilization scenarios where calendar aging of the coolant becomes the limiting factor.
  • A 24-month calendar limit on coolant life is a recognized practice because coolant additives, particularly corrosion inhibitors, degrade over time even when operating hours remain low, making the time-based threshold relevant for equipment that does not accumulate hours quickly.
  • The ratio between the check interval (300 hours) and the change interval (1200 hours) means a coolant inspection is due four times before a full change is required, allowing condition monitoring to catch issues such as contamination or additive depletion between drain intervals.

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