INFINITI QX50, J55 (USA)

Coolant capacity & service interval

INFINITI QX50, J55 (USA) models require coolant with a capacity of 7,7 liters. Service intervals include 75000 miles or 60 months and 105000 miles or 84 months. The data covers 8 configurations.

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

TypeSpecifications
QX50 2.0 (2022- )
  • Use: Normal
  • Capacity 7,7 liter
  • Change 75000 miles/ 60 months
QX50 2.0 (2022- )
  • Use: First change only
  • Capacity 7,7 liter
  • Change 105000 miles/ 84 months
QX50 2.0 AWD (2022- )
  • Use: Normal
  • Capacity 7,7 liter
  • Change 75000 miles/ 60 months
QX50 2.0 AWD (2022- )
  • Use: First change only
  • Capacity 7,7 liter
  • Change 105000 miles/ 84 months
QX50 2.0 (2018-2022)
  • Use: Normal
  • Capacity 7,7 liter
  • Change 75000 miles/ 60 months
QX50 2.0 (2018-2022)
  • Use: First change only
  • Capacity 7,7 liter
  • Change 105000 miles/ 84 months
QX50 2.0 AWD (2018-2022)
  • Use: Normal
  • Capacity 7,7 liter
  • Change 75000 miles/ 60 months
QX50 2.0 AWD (2018-2022)
  • Use: First change only
  • Capacity 7,7 liter
  • Change 105000 miles/ 84 months

Additional Notes

  • The INFINITI QX50 J55 cooling system holds 7.7 liters across all listed configurations, covering both FWD and AWD variants from 2018 onward. A capacity at this level reflects a full cooling system service fill, accounting for the engine block, radiator, and associated hoses rather than a partial drain-and-fill procedure.
  • Under normal use conditions, the coolant change interval is set at 75,000 miles or 60 months, whichever comes first. The time-based limit of 60 months means a five-year ceiling applies regardless of mileage accumulation.
  • A separate first-change-only interval of 105,000 miles or 84 months is specified alongside the normal interval. In coolant service schedules, a first-change-only designation typically applies to the factory-fill fluid, which is formulated to last longer than subsequent refills before its corrosion inhibitors deplete.
  • The 30,000-mile and 24-month gap between the first-change-only interval and the normal interval reflects the extended protection period of the original factory coolant charge compared to subsequent service fills.
  • The 7.7-liter capacity is consistent across the FWD and AWD variants of the 2.0-liter engine, indicating that the addition of all-wheel-drive hardware does not alter the cooling system volume in the specifications provided.
  • Both the 2018-2022 and the 2022-onward entries carry identical capacity and interval figures for each respective use condition, meaning no specification change is recorded at the 2022 model year boundary for the QX50 2.0 cooling system.

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