Holden Brougham, HK/HT/HG

Automatic transmission fluid capacity & service interval

Holden Brougham, HK/HT/HG automatic transmission fluid capacity ranges from 2,27 to 8,7 liters. Service intervals include checks at 10000 km and changes at 20000 km. The data covers 4 configurations.

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

TypeSpecifications
Brougham, HT 308 HC (1969-1970)
  • Use: Normal
  • Capacity 8,64 liter (Dry fill)
  • Capacity 2,27 liter (Service fill)
  • Check 10000 km
  • Change 20000 km
  • Code: GM Powerglide 2/1
Brougham, HG 308 HC (1969-1970)
  • Use: Normal
  • Capacity 8,64 liter (Dry fill)
  • Capacity 2,27 liter (Service fill)
  • Check 10000 km
  • Change 20000 km
  • Code: GM Powerglide 2/1
Brougham, HG 308 HC (1969-1970)
  • Use: Normal
  • Capacity 8,7 liter (Dry fill)
  • Capacity 2,27 liter (Service fill)
  • Check 10000 km
  • Change 20000 km
  • Code: Trimatic 3/1
Brougham, HK 307 (1968-1969)
  • Use: Normal
  • Capacity 5,97 liter (Dry fill)
  • Capacity 3,07 liter (Service fill)
  • Check 10000 km
  • Change 20000 km
  • Code: GM Powerglide 2/1

Additional Notes

  • The Holden Brougham HK 307 (1968-1969) automatic transmission carries a dry fill capacity of 5.97 liters, which represents the total fluid volume required when filling a completely drained or rebuilt unit, including the torque converter and all internal passages.
  • The HK 307's service fill capacity of 3.07 liters under normal use conditions is notably higher relative to its dry fill than the 308 HC variants, suggesting a different transmission unit with a proportionally larger pan or sump volume accessible during a routine fluid change.
  • Both the HG 308 HC entries list a service fill of 2.27 liters under normal use conditions, with dry fill figures of 8.64 liters and 8.7 liters respectively, indicating two slightly differing total capacity values recorded for the same engine and model year combination.
  • The HT 308 HC (1969-1970) automatic transmission shares an identical service fill of 2.27 liters and a dry fill of 8.64 liters under normal use conditions with one of the HG 308 HC entries, pointing to a consistent transmission specification carried across the HT and HG series for that engine.
  • Across all four configurations, the fluid check interval under normal use conditions is set at 10,000 km, while the change interval is 20,000 km, placing the check at the midpoint between each scheduled fluid replacement.
  • The 308 HC dry fill figures, ranging from 8.64 to 8.7 liters, are substantially larger than the HK 307's 5.97-liter dry fill, reflecting a meaningfully greater total fluid capacity in the transmission units paired with the 308 HC engine.

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