ERF ECU

Automatic transmission fluid capacity & service interval

ERF ECU automatic transmission fluid capacity ranges from 18 to 37 liters. Service intervals require a change every 40000 km. The data covers 9 configurations.

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

TypeSpecifications
ECU 3.9 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 37 liter
  • Change 40000 km
  • Code: Allison HD4560 6/1
ECU 3.9 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 18 liter
  • Change 40000 km
  • Code: Allison MD 3060 6/1
ECU 3.9 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 18 liter
  • Change 40000 km
  • Code: Allison MD 3560 5/1
ECU 5.9 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 37 liter
  • Change 40000 km
  • Code: Allison HD4560 6/1
ECU 5.9 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 18 liter
  • Change 40000 km
  • Code: Allison MD 3060 6/1
ECU 5.9 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 18 liter
  • Change 40000 km
  • Code: Allison MD 3560 5/1
ECU 8.3 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 37 liter
  • Change 40000 km
  • Code: Allison HD4560 6/1
ECU 8.3 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 18 liter
  • Change 40000 km
  • Code: Allison MD 3060 6/1
ECU 8.3 Euro 3 (2001-2004)
  • Use: Normal
  • Capacity 18 liter
  • Change 40000 km
  • Code: Allison MD 3560 5/1

Additional Notes

  • The ERF ECU automatic transmission specifications list two distinct capacity figures across all three engine variants: 37 liters and 18 liters. In automatic transmission servicing, the larger figure typically represents the total system fill, which includes the torque converter and all internal circuits, while the smaller figure represents the service or drain-and-fill capacity that accounts for fluid retained in the converter during a standard fluid change.
  • The 37-liter total fill capacity appears once per engine variant across the ECU 3.9, ECU 5.9, and ECU 8.3 Euro 3 configurations, each covering the 2001-2004 model years under normal use conditions.
  • The 18-liter service capacity appears twice per engine variant in the specifications, meaning two separate entries carry identical values for each of the three engine displacements. Both entries share the same 40,000 km change interval under normal use conditions.
  • A 40,000 km fluid change interval applies uniformly across all nine specification rows, covering the ECU 3.9, ECU 5.9, and ECU 8.3 Euro 3 variants for 2001-2004 under normal use conditions. In heavy commercial vehicle applications, a 40,000 km interval for automatic transmission fluid is a relatively frequent service schedule, reflecting the demanding duty cycles associated with trucks in this class.
  • No variation in service interval exists between the three engine displacements. The ECU 3.9, ECU 5.9, and ECU 8.3 all share the 40,000 km change interval, indicating a consistent maintenance schedule regardless of engine size within the 2001-2004 Euro 3 range.
  • All specifications are designated for normal use conditions. No severe-use or first-change-only intervals appear in the data, meaning the 40,000 km interval and the associated 18-liter and 37-liter capacities apply exclusively to standard operating conditions.

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