Austin A40

Brake fluid capacity & service interval

Austin A40 brake fluid capacity ranges between min and max values. Service intervals include 1500 km or 3200 km/1 months. The data covers 6 configurations.

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

TypeSpecifications
A40 Cambridge, GS5 (1954-1956)
  • Use: Normal
  • Between min and max.
  • Check 1500 km
A40 Somerset (1952-1954)
  • Use: Normal
  • Between min and max.
  • Check 3200 km/ 1 months
A40 Countryman (1947-1956)
  • Use: Normal
  • Between min and max.
  • Check 3200 km/ 1 months
A40 Devon (1947-1952)
  • Use: Normal
  • Between min and max.
  • Check 3200 km/ 1 months
A40 Dorset (1947-1950)
  • Use: Normal
  • Between min and max.
  • Check 3200 km/ 1 months
A40 Sports (1947-1953)
  • Use: Normal
  • Between min and max.
  • Check 3200 km/ 1 months

Additional Notes

  • All six Austin A40 variants across the 1947-1956 model range specify a hydraulic brake system, with fluid levels maintained between a minimum and maximum mark rather than a fixed fill volume.
  • The "between min and max" specification is a reservoir-level check rather than a total system capacity figure, reflecting the nature of hydraulic brake fluid maintenance where only top-up quantities are relevant under normal conditions.
  • The A40 Cambridge GS5 (1954-1956) carries a notably shorter check interval of 1,500 km, compared to the 3,200 km interval shared by all other A40 variants in the specifications.
  • The A40 Countryman, Devon, Dorset, Somerset, and Sports all share an identical brake fluid check interval of 3,200 km or 1 month, whichever comes first, under normal use conditions.
  • The combined distance-and-time interval of 3,200 km or 1 month means the monthly threshold can trigger a check before the kilometre figure is reached, which is relevant for vehicles covering low annual mileage.
  • The A40 Devon (1947-1952) and A40 Dorset (1947-1950) overlap in production years with the A40 Countryman and Sports, yet all four share the same 3,200 km / 1-month brake fluid check interval under normal use.
  • The A40 Somerset (1952-1954) bridges the production gap between the Devon and the Cambridge GS5, and while Somerset shares the 3,200 km interval with earlier variants, the Cambridge GS5 that followed introduced the shorter 1,500 km interval.

Other Systems