Alexander Dennis Enviro
Coolant capacity & service interval
Alexander Dennis Enviro coolant specifications cover a capacity range of 39 to 48 liters. The data includes two configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Enviro 200 4.5 (2006-2014) |
|
| Enviro 200 6.7 (2006-2014) |
|
Additional Notes
- The Enviro 200 4.5 carries a cooling system capacity of 39 liters, while the 6.7 variant holds 48 liters — a difference of 9 liters between the two engine configurations across the 2006-2014 model years.
- The 48-liter figure associated with the 6.7 engine reflects the greater coolant volume typically required by larger displacement engines, which generate more heat and demand a proportionally larger cooling circuit.
- Both the 4.5 and 6.7 cooling system capacities are specified under normal use conditions, meaning the 39-liter and 48-liter values apply to standard operating environments rather than severe-duty cycles.
- A 39-liter cooling system, as found in the Alexander Dennis Enviro 200 4.5, represents a substantial total fill volume, consistent with the large-capacity cooling circuits common in transit bus applications where sustained low-speed operation places continuous thermal demands on the engine.