Mazda Grand Familia/818 (EU)

Automatic transmission fluid capacity & service interval

Mazda Grand Familia/818 (EU) automatic transmission fluid capacity is 6,2 liters. Service intervals require checks every 10000 km or 6 months. The data covers 2 configurations.

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

TypeSpecifications
Grand Familia 818 1300, STC (1973-1978)
  • Use: Normal
  • Capacity 6,2 liter
  • Check 10000 km/ 6 months
  • Code: 3/1
Grand Familia 818 1600, SN4 (1973-1978)
  • Use: Normal
  • Capacity 6,2 liter
  • Check 10000 km/ 6 months
  • Code: 3/1

Additional Notes

  • Both the Grand Familia 818 1300 (STC) and the 1600 (SN4) share an automatic transmission fluid capacity of 6.2 liters, covering the full 1973-1978 model range for each engine variant.
  • A 6.2-liter automatic transmission fluid capacity is relatively substantial for a compact vehicle of the era, a figure typically associated with a full system fill including the torque converter, valve body, and transmission pan rather than a drain-and-fill service quantity alone.
  • The specified check interval for automatic transmission fluid is every 10,000 km or 6 months, whichever comes first, applied under normal use conditions for both the 1300 and 1600 engine configurations.
  • The 10,000 km or 6-month check interval reflects a time-based threshold alongside a distance-based one, meaning whichever limit is reached first would trigger the fluid inspection regardless of actual mileage accumulated.
  • The identical capacity and check interval across the 1300 STC and 1600 SN4 variants suggests the two engine configurations shared the same automatic transmission unit, at least in terms of fluid volume and service scheduling.

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