Alexander Dennis Enviro

Automatic transmission fluid capacity & service interval

Alexander Dennis Enviro automatic transmission fluid capacity ranges from 10 to 28 liters. Service intervals are not specified. The data covers 8 configurations.

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

TypeSpecifications
Enviro 200 4.5 (2006-2014)
  • Use: Normal
  • Capacity 14 liter (Dry fill)
  • Capacity 10 liter (Service fill)
  • Code: Allison 2100 5/1
Enviro 200 4.5 (2006-2014)
  • Use: Normal
  • Capacity 25-28 liter (Dry fill)
  • Capacity 23-26 liter (Service fill)
  • Code: D823.3 3/1
Enviro 200 4.5 (2006-2014)
  • Use: Normal
  • Capacity 25-28 liter (Dry fill)
  • Capacity 23-26 liter (Service fill)
  • Code: D854.5 4/1
Enviro 200 4.5 (2006-2014)
  • Use: Normal
  • Capacity 28 liter (Dry fill)
  • Capacity 15 liter (Service fill)
  • Code: T280R 6/1
Enviro 200 6.7 (2006-2014)
  • Use: Normal
  • Capacity 14 liter (Dry fill)
  • Capacity 10 liter (Service fill)
  • Code: Allison 2100 5/1
Enviro 200 6.7 (2006-2014)
  • Use: Normal
  • Capacity 25-28 liter (Dry fill)
  • Capacity 23-26 liter (Service fill)
  • Code: D823.3 3/1
Enviro 200 6.7 (2006-2014)
  • Use: Normal
  • Capacity 25-28 liter (Dry fill)
  • Capacity 23-26 liter (Service fill)
  • Code: D854.5 4/1
Enviro 200 6.7 (2006-2014)
  • Use: Normal
  • Capacity 28 liter (Dry fill)
  • Capacity 15 liter (Service fill)
  • Code: T280R 6/1

Additional Notes

  • The Alexander Dennis Enviro 200 automatic transmission specifications for 2006-2014 cover both the 4.5 and 6.7 engine variants, and both share identical capacity figures across all listed transmission configurations.
  • One transmission configuration carries a dry fill capacity of 14 liters and a service fill capacity of 10 liters. The 4-liter difference between dry and service fill reflects the volume of fluid retained in the torque converter and other internal passages during a routine drain, which is not recovered when servicing without a full teardown.
  • A second configuration lists a dry fill range of 25-28 liters paired with a service fill range of 23-26 liters. The overlapping ranges indicate that the exact capacity depends on the specific transmission unit or variant within that configuration, and the narrower gap between dry and service fill suggests a higher proportion of fluid is recoverable during a standard service on larger-capacity units.
  • A third configuration shares the same 25-28 liter dry fill and 23-26 liter service fill range as the second, appearing as a separate entry for both the 4.5 and 6.7 engine variants.
  • A fourth configuration specifies a dry fill of 28 liters alongside a service fill of only 15 liters. The 13-liter gap between dry and service fill is notably large, indicating that a substantial volume of fluid remains trapped within the transmission assembly during a routine service drain on that particular unit.
  • All eight rows across both engine displacements are designated for normal use conditions, meaning none of the listed capacities are tied to a severe-duty or extended-interval service scenario.

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