Dennis S.P.D.

Automatic transmission fluid capacity & service interval

Dennis S.P.D. uses automatic transmission fluid with a capacity range of 18 to 26 liters. The data covers 2 configurations.

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

Type	Specifications
S.P.D. (1999-2005)	Use: Normal Capacity 18 liter Code: Allison B300R 3/1
S.P.D. (1999-2005)	Use: Normal Capacity 26 liter Code: Voith D 823 3/1

The Dennis S.P.D. automatic transmission carries two distinct capacity figures under normal use conditions: 18 liters and 26 liters.
In automatic transmission service, a smaller capacity value typically reflects a fluid change or service fill, while a larger value represents the total system capacity following a full overhaul or dry fill procedure.
The 8-liter difference between the two figures suggests a meaningful volume of fluid remains in the torque converter and cooler lines during a standard drain, which is common in automatic transmission designs where a full drain is not achievable without disassembly.