Hummer H1 (USA / CAN)
Differential fluid capacity & service interval
Hummer H1 (USA / CAN) differential fluid capacity ranges from 0,5 to 1,9 liters. Service intervals require changes every 12000 miles. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- The Hummer H1 6.5D covers model years 1994-2004, while the turbocharged 6.5TD variant spans a shorter range beginning in 1996, meaning the two engine configurations share an overlapping but not identical production window.
- Both the front and rear differentials on the H1 carry a main housing capacity of 1.9 liters, which represents the primary service fill volume for each unit during a standard fluid change.
- In addition to the 1.9-liter differential housing capacity, each hub on both axles holds 0.5 liters of fluid, making the per-hub volume a separate and distinct service consideration from the differential housing itself.
- With two hubs per axle, the total hub fluid volume on a single axle amounts to 1.0 liter, which when added to the 1.9-liter housing capacity brings the complete per-axle fluid volume to 2.9 liters.
- The 12,000-mile change interval applies to normal use conditions across all four differential positions, covering both the naturally aspirated 6.5D and the turbocharged 6.5TD configurations without distinction.
- The front and rear differentials on the H1 6.5D (1994-2004) carry identical capacity and interval specifications, indicating no differentiation between axle positions in the service schedule for that engine variant.
- The same pattern holds for the H1 6.5TD (1996-2004), where the front and rear differential specifications are identical in both fluid capacity and the 12,000-mile normal-use change interval.