MAN M90
Transfer case fluid capacity & service interval
MAN M90 transfer case uses transfer case fluid with a capacity of 3.2 liters. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| M90 18.192 FA/SOLO (4x4) (1988-2005) |
|
| M90 18.232 FA (4x4) (1988-2005) |
|
Additional Notes
- Both 4x4 configurations covered in the specifications share an identical transfer case fluid capacity of 3.2 liters, recorded under normal use conditions.
- A 3.2-liter transfer case fill is a moderately sized capacity for a heavy-duty commercial vehicle transfer box, reflecting the mechanical scale of the MAN M90 platform in its 4x4 drivetrain variants.
- The capacity figure of 3.2 liters applies specifically to the transfer box assembly, which is a separate unit from the main gearbox and axle differentials, each of which carries its own independent fluid volume.
- The 18.192 FA/SOLO and 18.232 FA variants share the same 3.2-liter transfer case specification across the full 1988-2005 model year span listed, indicating no revision to the fill volume occurred between those two configurations over that period.
- The normal use condition designation attached to the 3.2-liter capacity means the specification applies to standard operating environments, as opposed to severe-duty cycles that sometimes carry different service intervals or fluid volumes in other systems.