Isuzu NKR

Power steering fluid capacity & service interval

Isuzu NKR power steering fluid capacity ranges from 0,5 to 1,6 liters. Service intervals include checking at 10000 km or 6 months, changing at 40000 km or 24 months, and checking at 10000 km or 18 months. The data covers 10 configurations.

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

TypeSpecifications
NKR 35 (1998-2007)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
NKR 35 (1998-2007)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 10000 km/ 18 months
NKR 55 (1996-2007)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
NKR 55 (1996-2007)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 10000 km/ 18 months
NKR 58 (1996-2007)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
NKR 58 (1996-2007)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 10000 km/ 18 months
NKR 66 (1996-2007)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
NKR 66 (1996-2007)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 10000 km/ 18 months
NKR 69 (1996-2007)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
NKR 69 (1996-2007)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 10000 km/ 18 months

Additional Notes

  • The power steering system capacity of 1.6 liters applies uniformly across all five Isuzu NKR variants covered — the NKR 35, 55, 58, 66, and 69. A capacity at this level is typical of a hydraulic power steering reservoir and circuit fill, rather than a full system overhaul volume.
  • The steering box capacity of 0.5 liters is specified separately from the power steering circuit across all variants. The steering box is a mechanically distinct component, and its smaller fluid volume reflects the limited internal space of a recirculating ball or worm-and-sector gear housing.
  • Power steering fluid checks are scheduled at 10,000 km or every 6 months under normal use conditions, whichever comes first. The 6-month time interval is notably shorter than the mileage trigger, which means time-based servicing will often govern in lower-mileage applications.
  • The power steering fluid change interval is set at 40,000 km or 24 months under normal use conditions. At 40,000 km, a fluid change represents a moderately frequent replacement cycle for a hydraulic steering system, reflecting the need to remove degraded fluid before it causes seal or pump wear.
  • Steering box fluid checks are scheduled at 10,000 km or every 18 months under normal use conditions. No fluid change interval is listed for the steering box across any of the NKR variants, only a check interval.
  • The NKR 35 shares the same power steering and steering box capacities and service intervals as the NKR 55, 58, 66, and 69, despite entering the specification range two years later in 1998 compared to the 1996 start year of the other four variants.
  • The ratio between the power steering check interval and change interval follows a 1:4 pattern — one change for every four checks at the mileage trigger of 10,000 km and 40,000 km respectively. The time-based ratio differs slightly, with one change per 24 months against checks every 6 months, producing a 1:4 ratio as well.

Other Systems