Vauxhall VX series

Differential fluid capacity & service interval

Vauxhall VX series differential fluid capacity is 1,4 liters. Service intervals occur 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)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months
  • VX2300 (1976-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months
  • VX2300i (1976-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months
  • VX490 (1976-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months

Additional Notes

  • The Vauxhall VX series rear differential holds 1.4 liters of fluid across all four variants covered in the 1976-1978 specifications, namely the VX1800, VX2300, VX2300i, and VX490.
  • A 1.4-liter capacity is a relatively modest fill volume, consistent with a compact rear differential unit rather than a heavy-duty axle assembly requiring larger fluid reserves.
  • The check interval is set at 20,000 km or 6 months, whichever comes first, under normal use conditions across all four variants.
  • A 6-month time-based threshold alongside the 20,000 km mileage interval means that lower-mileage vehicles still reach a service checkpoint within half a year, regardless of distance traveled.
  • The uniform 1.4-liter capacity and identical 20,000 km / 6-month check interval across the VX1800, VX2300, VX2300i, and VX490 indicate a shared rear differential specification despite the differing engine displacements those model designations represent.
  • The VX2300 and VX2300i share the same rear differential capacity and check interval, suggesting the fuel induction difference between the two variants did not influence the rear axle specification.

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