Isuzu NQR

Differential fluid capacity & service interval

Isuzu NQR differential fluid capacity is 4,3 liters. Service intervals include checks at 10000 km and changes at 40000 km or 24 months. The data covers 2 configurations.

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

TypeSpecifications
  • NQR 70 (1998-2007)
  • Rear, hypoid
  • Use: Normal
  • Capacity 4,3 liter
  • Check 10000 km
  • Change 40000 km/ 24 months
  • Code: 244
  • NQR 66 (1996-2007)
  • Rear, hypoid
  • Use: Normal
  • Capacity 4,3 liter
  • Check 10000 km
  • Change 40000 km/ 24 months
  • Code: NQR 66 L/P/R

Additional Notes

  • Both the NQR 66 and NQR 70 share an identical rear hypoid differential fluid capacity of 4.3 liters, which is a typical service fill volume for a rear axle differential in a medium-duty truck application.
  • The NQR 66 carries a model year span beginning in 1996, while the NQR 70 enters the specifications from 1998, meaning the two configurations overlap across the 1998-2007 period.
  • Under normal use conditions, the rear differential fluid on both configurations is subject to a change interval of 40,000 km or 24 months, whichever comes first, reflecting a dual-trigger service schedule that accounts for both distance and elapsed time.
  • The check interval for both the NQR 66 and NQR 70 is set at 10,000 km, which is four times more frequent than the full fluid change interval of 40,000 km, indicating that fluid level monitoring is treated as a separate and more regular maintenance event than a complete drain-and-fill service.
  • The 24-month time-based change interval means that even at low annual mileage, the rear differential fluid on both configurations is due for replacement within two years regardless of distance accumulated.

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