Vauxhall VX series

Automatic transmission fluid capacity & service interval

Vauxhall VX series automatic transmission fluid capacity is 2,5 liters. Service intervals include checks every 10000 km or 3 months and changes every 20000 km or 6 months. The data covers 4 configurations.

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

TypeSpecifications
VX1800 (1976-1978)
  • Use: Normal
  • Capacity 2,5 liter (Service fill)
  • Check 10000 km/ 3 months
  • Change 20000 km/ 6 months
  • Code: GM 3-OVH 3/1
VX2300 (1976-1978)
  • Use: Normal
  • Capacity 2,5 liter (Service fill)
  • Check 10000 km/ 3 months
  • Change 20000 km/ 6 months
  • Code: GM 3-OVH 3/1
VX2300i (1976-1978)
  • Use: Normal
  • Capacity 2,5 liter (Service fill)
  • Check 10000 km/ 3 months
  • Change 20000 km/ 6 months
  • Code: GM 3-OVH 3/1
VX490 (1976-1978)
  • Use: Normal
  • Capacity 2,5 liter (Service fill)
  • Check 10000 km/ 3 months
  • Change 20000 km/ 6 months
  • Code: GM 3-OVH 3/1

Additional Notes

  • The Vauxhall VX series automatic transmission service fill capacity is 2.5 liters across all four variants covered by the specifications: the VX1800, VX2300, VX2300i, and VX490, each spanning the 1976-1978 model years.
  • A service fill figure of 2.5 liters represents the amount of fluid added during a routine top-up or partial drain-and-fill service, rather than the total system volume that would be displaced during a full overhaul or complete fluid exchange.
  • The check interval for automatic transmission fluid across all four variants is set at 10,000 km or 3 months, whichever comes first under normal use conditions.
  • The change interval is specified at 20,000 km or 6 months under normal use conditions, placing the fluid change cycle at exactly double the check interval in both distance and time terms.
  • The alignment of the change interval at twice the check interval suggests a structured maintenance cadence where two inspection points occur for every one full fluid replacement cycle.
  • All four variants share identical capacity and interval specifications, indicating no differentiation in automatic transmission fluid requirements between the VX1800, VX2300, VX2300i, and VX490 for the 1976-1978 period.

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