Honda Civic III, AG/AH/AK/AN (USA / CAN)

Manual transmission fluid capacity & service interval

Honda Civic III, AG/AH/AK/AN (USA / CAN) manual transmission fluid capacity ranges from 2,3 to 2,5 liters. Service intervals occur every 30000 miles or 30 months. The data covers 3 configurations.

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

TypeSpecifications
Civic III Si (1985-1987)
  • Use: Normal
  • Capacity 2,5 liter (Initial fill)
  • Capacity 2,3 liter (Service fill)
  • Change 30000 miles/ 30 months
  • Code: GW 5/1
Civic III 1300 (1984-1987)
  • Use: Normal
  • Capacity 2,5 liter (Initial fill)
  • Capacity 2,3 liter (Service fill)
  • Change 30000 miles/ 30 months
  • Code: GV 4/1
Civic III DX, S (1984-1987)
  • Use: Normal
  • Capacity 2,5 liter (Initial fill)
  • Capacity 2,3 liter (Service fill)
  • Change 30000 miles/ 30 months
  • Code: GW 5/1

Additional Notes

  • The Honda Civic III AG/AH/AK/AN manual transaxle holds 2.5 liters at initial fill, which represents the total fluid volume required when the unit is dry, such as after a rebuild or replacement.
  • Service fill capacity across all three configurations — the 1300, DX/S, and Si — is rated at 2.3 liters, reflecting the smaller volume needed when residual fluid remains in the transaxle after a drain.
  • The 0.2-liter difference between initial fill and service fill is consistent across the 1300, DX/S, and Si trims for 1984-1987, indicating a uniform transaxle design shared among these variants.
  • The Si trim, covering 1985-1987, carries the same 2.5-liter initial and 2.3-liter service fill figures as the 1300 and DX/S trims despite entering production one year later.
  • The fluid change interval for all three configurations is set at 30,000 miles or 30 months under normal use conditions, meaning whichever threshold is reached first would trigger a service event.
  • A 30-month time-based interval works out to two and a half years, which accounts for vehicles that accumulate mileage slowly and might not reach 30,000 miles within a typical annual service window.

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