2020 Isuzu NPR Oil Capacity & Filter Reference

The 2020 Isuzu NPR has an oil capacity of 4.6 quarts (4.4 liters) for the 6.0L V8 gasoline engine and 10.6 quarts (10.0 liters) for the 5.2L 4HK1-TC diesel engine.

Quick Answer

For 6.0L V8 Gasoline Engine:

• Oil Capacity: 4.6 quarts (4.4 liters)
• Recommended Oil Weight: 5W-30
• Oil Type Spec: Dexos1 Gen2 or equivalent API-licensed SN PLUS or higher.
• OEM Oil Filter Part Number: Consult dealer
• Aftermarket Oil Filter Cross-References:
  • Fram: PH10575
  • Wix: 57060
  • Mobil 1: M1-113A

For 5.2L 4HK1-TC Diesel Engine:

• Oil Capacity: 10.6 quarts (10.0 liters)
• Recommended Oil Weight: 10W-30 or 5W-30 (depending on ambient temperature, consult owner's manual for specifics)
• Oil Type Spec: API CJ-4 or API CK-4. ACEA E9 is also often specified.
• OEM Oil Filter Part Number: Consult dealer
• Aftermarket Oil Filter Cross-References:
  • Fram: CH10702
  • Wix: 57978
  • Mobil 1: M1C-251A

Capacity by Engine Option

Oil Change Interval

The oil change interval for your 2020 Isuzu NPR can vary significantly based on driving conditions and engine type. Always refer to your owner's manual for the most accurate and up-to-date information.

• Normal Duty (Gasoline): Typically every 7,500 miles or 12 months, whichever comes first.
• Severe Duty (Gasoline): Typically every 3,000-5,000 miles or 6 months, whichever comes first. This includes frequent short trips, extensive idling, towing, or operating in dusty conditions.
• Normal Duty (Diesel): Typically every 10,000 miles or 12 months, whichever comes first.
• Severe Duty (Diesel): Typically every 5,000 miles or 6 months, whichever comes first. This includes heavy loads, frequent stop-and-go driving, or operating in extreme temperatures.

Drain Plug Torque

• 6.0L V8 Gasoline Engine: The drain plug torque specification is typically around 24 lb-ft (33 Nm). Always use a new drain plug gasket every time you change the oil.
• 5.2L 4HK1-TC Diesel Engine: The drain plug torque specification is typically around 33 lb-ft (45 Nm). Always use a new drain plug gasket/crush washer every time you change the oil.

A new crush washer or gasket is crucial to prevent leaks and ensure a proper seal. Do not overtighten, as this can strip the oil pan threads.

How to Change the Oil

Changing the oil on your 2020 Isuzu NPR is a straightforward maintenance task for those comfortable working on vehicles. Here's a general overview:

1. Gather Supplies: Ensure you have the correct oil, oil filter, drain pan, wrench, torque wrench, and a new drain plug gasket/crush washer.
2. Warm the Engine: Run the engine for a few minutes to warm the oil, allowing it to drain more easily.
3. Lift and Secure: Safely lift the front of the vehicle using a jack and secure it with jack stands. Ensure the vehicle is level enough for proper drainage.
4. Locate Drain Plug: Place the drain pan beneath the oil pan and carefully remove the drain plug.
5. Drain Oil: Allow all the old oil to drain completely. This can take several minutes.
6. Replace Filter: While the oil is draining, remove the old oil filter. Apply a thin coat of new oil to the gasket of the new filter before installing it. Hand-tighten the new filter until snug, then turn an additional 3/4 to 1 full turn (or as specified by the filter manufacturer).
7. Reinstall Drain Plug: Once drained, clean the drain plug and its mating surface. Install the new crush washer or gasket and reinstall the drain plug, tightening to the manufacturer's torque specification.
8. Refill Oil: Lower the vehicle and add the recommended amount and type of new engine oil through the oil fill cap.
9. Check Level and Inspect: Start the engine and let it run for a minute to circulate the new oil. Turn the engine off, wait a few minutes, and then check the oil level with the dipstick. Top off if necessary. Inspect for any leaks around the drain plug and oil filter.
10. Reset Oil Life Monitor: Reset the oil life monitoring system according to your owner's manual instructions.

Common Issues / Tips

• Diesel Particulate Filter (DPF) Considerations (Diesel Engines): For diesel models, using the correct low-ash oil (API CJ-4 or CK-4) is critical to protect the DPF and ensure its longevity. Incorrect oil can lead to premature DPF clogging and costly repairs.
• Regular Fluid Checks: With commercial vehicles like the NPR, frequently check all fluid levels, not just oil, to catch potential issues early.
• Maintenance Schedule Adherence: Given the often demanding work cycles of an NPR, strict adherence to the severe duty maintenance schedule is highly recommended to maximize engine life and reliability.
• Filter Quality: Always use high-quality oil filters. Cheap filters can lead to poor filtration, reduced oil flow, and potential engine damage.
• Consult Owner's Manual: The 2020 Isuzu NPR owner's manual is your definitive source for all maintenance information, including specific oil recommendations and service intervals for your exact configuration. If in doubt, consult your Isuzu dealer.

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