Hudson Commodore

Manual transmission fluid capacity & service interval

Hudson Commodore manual transmission fluid capacity ranges from 0,91 kg to 1,47 kg. Service intervals include checking at 1000 miles and changing at 5000 miles. The data covers 12 configurations.

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

TypeSpecifications
Commodore Eight (1951-1952)
  • Use: Normal
  • Capacity 0,91 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 3/1
  • Commodore Eight (1951-1952)
  • With overdrive
  • Use: Normal
  • Capacity 1,47 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 4/1
Commodore Six (1951-1952)
  • Use: Normal
  • Capacity 0,91 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 3/1
  • Commodore Six (1951-1952)
  • With overdrive
  • Use: Normal
  • Capacity 1,47 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 4/1
Commodore Eight (1948-1951)
  • Use: Normal
  • Capacity 0,91 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 3/1
  • Commodore Eight (1948-1951)
  • With overdrive
  • Use: Normal
  • Capacity 1,47 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 4/1
Commodore Six (1948-1951)
  • Use: Normal
  • Capacity 0,91 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 3/1
  • Commodore Six (1948-1951)
  • With overdrive
  • Use: Normal
  • Capacity 1,47 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 4/1
Commodore Eight (1941-1947)
  • Use: Normal
  • Capacity 0,91 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 3/1
  • Commodore Eight (1941-1947)
  • With overdrive
  • Use: Normal
  • Capacity 1,47 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 4/1
Commodore Six (1941-1947)
  • Use: Normal
  • Capacity 0,91 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 3/1
  • Commodore Six (1941-1947)
  • With overdrive
  • Use: Normal
  • Capacity 1,47 kg
  • Check 1000 miles
  • Change 5000 miles
  • Code: 4/1

Additional Notes

  • The standard manual transmission capacity of 0.91 kg applies to all Commodore Six and Commodore Eight configurations across the full 1941-1952 span covered by these specifications. Fluid capacity expressed in kilograms reflects mass rather than volume, a measurement convention that accounts for the varying density of different gear oil grades used during this era.
  • Adding an overdrive unit to the Hudson Commodore's manual transmission raises the fluid capacity from 0.91 kg to 1.47 kg, an increase of roughly 62 percent. The overdrive mechanism is a planetary gearset mounted behind the main gearbox, and its additional internal components account for the greater fluid requirement.
  • The 1,000-mile check interval specified for all configurations reflects the short initial verification intervals common to mid-twentieth century service schedules, when seals and machined surfaces were expected to require closer monitoring during early use.
  • A 5,000-mile fluid change interval is listed under normal use conditions for every configuration in these specifications, covering both the standard manual and the manual-plus-overdrive setups across all Commodore Six and Commodore Eight model year ranges.
  • The Commodore Eight and Commodore Six share identical capacity and interval figures in every corresponding configuration. The 0.91 kg standard and 1.47 kg overdrive capacities apply regardless of whether the engine is a six-cylinder or eight-cylinder unit, indicating the transmission assemblies were dimensionally equivalent across both engine lines.
  • The Commodore Eight specifications span three overlapping year groupings: 1941-1947, 1948-1951, and 1951-1952. The 1951 model year appears in both the 1948-1951 and 1951-1952 groupings, which reflects a transitional period in the model's production history rather than a data conflict.
  • The same overlapping year structure seen in the Commodore Eight applies equally to the Commodore Six, with 1951-1952 forming a distinct grouping alongside the earlier 1948-1951 range. Despite the overlap, the fluid capacities and service intervals remain unchanged across all three groupings for both engine variants.

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