Mazda 6, GG/GY (USA / CAN)

Differential fluid capacity & service interval

Mazda 6, GG/GY (USA / CAN) differential fluid capacity is 1 liter. Service intervals require a change at 28100 miles. Data covers 4 configurations.

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

TypeSpecifications
  • Mazdaspeed6 (CAN) (2005-2007)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Mazdaspeed6 (CAN) (2005-2007)
  • Rear
  • Use: Severe
  • Capacity 1 liter
  • Change 28100 miles
  • Mazdaspeed6 (USA) (2005-2007)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Mazdaspeed6 (USA) (2005-2007)
  • Rear
  • Use: Severe
  • Capacity 1 liter
  • Change 28100 miles

Additional Notes

  • The Mazda 6 GG/GY Mazdaspeed6 rear differential holds 1 liter of fluid, a figure that applies equally to both the Canadian and US market variants across the 2005-2007 model years.
  • A 1-liter rear differential capacity is relatively modest and consistent with a compact limited-slip or open differential unit, as opposed to larger rear axle assemblies found in trucks or performance-oriented rear-wheel-drive platforms.
  • No change interval is listed under the normal use condition for either the Canadian or US Mazdaspeed6, while the severe use condition carries a defined change interval of 28,100 miles for both markets.
  • The 28,100-mile severe-use change interval for the rear differential fluid applies identically to the Canadian and US Mazdaspeed6 configurations, indicating no regional variation in service scheduling between the two markets.
  • Severe use conditions, when tied to a specific change interval as seen here at 28,100 miles, typically reflect operating environments involving frequent towing, off-road driving, trailer hauling, or repeated high-load acceleration cycles that accelerate fluid degradation.

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