Mazda 6, GH/GZ (USA / CAN)

Automatic transmission fluid capacity & service interval

Mazda 6, GH/GZ (USA / CAN) requires automatic transmission fluid with a capacity range of 6,6 to 8,14 liters. The data covers 6 configurations.

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

TypeSpecifications
6 2.5 (CAN) (2010-2013)
  • Use: Normal
  • Capacity 8,14 liter (Dry fill)
  • Code: 5/1
6 2.5 (USA) (2010-2013)
  • Use: Normal
  • Capacity 8,14 liter (Dry fill)
  • Code: 5/1
6 2.5 (CAN) (2008-2010)
  • Use: Normal
  • Capacity 8,14 liter (Dry fill)
  • Code: 5/1
6 2.5 (USA) (2008-2010)
  • Use: Normal
  • Capacity 8,14 liter (Dry fill)
  • Code: 5/1
6 3.7 (CAN) (2008-2013)
  • Use: Normal
  • Capacity 6,6-7 liter
  • Code: 6/1
6 3.7 (USA) (2008-2013)
  • Use: Normal
  • Capacity 6,6-7 liter
  • Code: 6/1

Additional Notes

  • The 8.14-liter figure listed for the Mazda 6 2.5 automatic transaxle represents a dry fill capacity, meaning the measurement applies to a complete overhaul where the transmission, torque converter, and all fluid passages are fully drained and refilled from empty. A routine service change yields a significantly lower volume because residual fluid remains in the torque converter and valve body.
  • The 2.5-liter four-cylinder configurations in both the USA and CAN markets share the identical 8.14-liter dry fill capacity across the full 2008-2013 span, indicating no transaxle hardware change between the 2008-2010 and 2010-2013 sub-ranges that would affect total fluid volume.
  • The 3.7-liter V6 configurations carry a capacity range of 6.6 to 7 liters rather than a single fixed value. A stated range typically reflects variation between measurement methods or slight differences in how completely the unit drains before refill, and no dry fill designation is attached to the 3.7 entries.
  • The 3.7-liter V6 transaxle capacity of 6.6-7 liters is notably lower than the 8.14-liter figure associated with the 2.5-liter four-cylinder, which reflects the use of a different automatic transaxle unit suited to the larger engine rather than a simple scaling of fluid volume with engine displacement.
  • All six rows carry a normal use condition, meaning the listed capacities and service parameters apply to standard operating environments rather than elevated-stress or severe-duty cycles such as frequent towing, extreme temperatures, or predominantly short-trip driving.
  • The 3.7 V6 capacity specification is consistent across both the USA and CAN market variants for the full 2008-2013 range, with no regional difference recorded in the fluid volume figures.

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