Isuzu NQR

Coolant capacity & service interval

Isuzu NQR coolant capacity ranges from 12 to 14 liters. Service intervals require changes every 40000 km or 48 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)
  • Use: Normal
  • Capacity 14 liter
  • Change 40000 km/ 48 months
NQR 66 (1996-2007)
  • Use: Normal
  • Capacity 12 liter
  • Change 40000 km/ 48 months

Additional Notes

  • The Isuzu NQR 66 carries a cooling system capacity of 12 liters, while the NQR 70 holds 14 liters, reflecting the difference in engine displacement between the two configurations.
  • Both the NQR 66 and NQR 70 share an identical coolant change interval of 40,000 km or 48 months under normal use conditions, whichever comes first.
  • The 48-month time limit on the coolant change interval means that even low-mileage operation does not extend service beyond a four-year period.
  • The NQR 66 cooling system specification applies across a 1996-2007 model year span, while the NQR 70 specification covers a narrower 1998-2007 range.
  • A 14-liter cooling system capacity, as seen on the NQR 70, is a relatively large fill volume for a medium-duty truck, indicating a sizable engine block and extended coolant circuit.

Other Systems