INFINITI G20, P10 / P11 (USA)

Automatic transmission fluid capacity & service interval

INFINITI G20, P10 / P11 (USA) models utilize automatic transmission fluid with a capacity of 7 liters. Service intervals include checking every 24000 km or 12 months, 15000 miles or 12 months, and changing every 30000 miles or 24 months. The data covers 9 configurations.

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

TypeSpecifications
G20, P11 (2002-2002)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
G20, P11 (2002-2002)
  • Use: Severe
  • Between min and max.
  • Change 30000 miles/ 24 months
G20, P11 (2001-2001)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
G20, P11 (2001-2001)
  • Use: Severe
  • Between min and max.
  • Change 30000 miles/ 24 months
G20, P11 (2000-2000)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
G20, P11 (2000-2000)
  • Use: Severe
  • Between min and max.
  • Change 30000 miles/ 24 months
G20, P11 (1999-1999)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
G20, P11 (1999-1999)
  • Use: Severe
  • Between min and max.
  • Change 30000 miles/ 24 months
G20, P10 (1991-1996)
  • Use: Normal
  • Capacity 7 liter
  • Check 24000 km/ 12 months
  • Code: 4/1

Additional Notes

  • The INFINITI G20 P10 (1991-1996) automatic transaxle carries a stated fluid capacity of 7 liters, which represents a total system fill figure rather than a partial drain-and-refill service quantity.
  • No equivalent volumetric capacity figure appears for the P11 generation (1999-2002); instead, the specification references a "between min and max" level check, meaning fluid level is verified against dipstick or fill-plug markers rather than measured by volume.
  • The P10 automatic transaxle service interval is expressed in kilometers, with a check interval of 24,000 km or 12 months under normal use conditions.
  • The P11 generation shifts to mile-based intervals, with normal use calling for a fluid level check at 15,000 miles or 12 months across the 1999-2002 model years.
  • Under severe use conditions, the P11 automatic transaxle specification moves from a check interval to an actual fluid change interval of 30,000 miles or 24 months, a distinction that reflects meaningfully higher service demands on the fluid.
  • The severe-use change interval of 30,000 miles or 24 months remains consistent across all P11 model years from 1999 through 2002, with no variation between those years in the specifications.
  • The normal-use check interval for the P11 at 15,000 miles or 12 months is half the mileage of the severe-use change interval at 30,000 miles, though the two serve different service actions — inspection versus replacement.

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