Mazda RX (EU)

Differential fluid capacity & service interval

Mazda RX (EU) differential fluid capacity ranges from 1,2 to 1,4 liters. Service intervals include checks at 6000 km and changes at 1000 km or 18000 km. The data covers 4 configurations.

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

TypeSpecifications
  • RX-3 (1972-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 6000 km
  • Change 18000 km
  • RX-3 (1972-1978)
  • Rear
  • Use: Initial service
  • Capacity 1,4 liter
  • Change 1000 km
  • RX-2 (1971-1974)
  • Rear
  • Use: Normal
  • Capacity 1,2 liter
  • Check 6000 km
  • Change 18000 km
  • RX-2 (1971-1974)
  • Rear
  • Use: Initial service
  • Capacity 1,2 liter
  • Change 1000 km

Additional Notes

  • The Mazda RX-2 rear differential holds 1.2 liters of fluid, while the RX-3 rear differential holds 1.4 liters, representing a 200 ml difference between the two models across their respective production spans.
  • Both the RX-2 (1971-1974) and RX-3 (1972-1978) share identical normal-use service intervals for the rear differential, with a fluid level check scheduled at 6,000 km and a full fluid change at 18,000 km.
  • An initial service change interval of 1,000 km applies to both the RX-2 and RX-3 rear differentials, a notably short interval compared to the 18,000 km normal-use change schedule, reflecting the break-in period practice of removing metal particles and contaminants introduced during initial component wear.
  • The 1.4-liter capacity of the RX-3 rear differential is consistent across both the normal-use and initial service entries, indicating a single fill volume regardless of service condition rather than a reduced break-in quantity.
  • The initial service entries for both models list only a change interval at 1,000 km, with no check interval specified, unlike the normal-use condition which includes both a check at 6,000 km and a change at 18,000 km.

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