2024 Isuzu NQR Fluid Type Specifications

Quick Reference

Engine Oil

The 2024 Isuzu NQR, equipped with the 4HK1-TC diesel engine, requires specific engine oil to ensure optimal performance and longevity. Isuzu recommends using a high-quality engine oil that meets ACEA E6 or E9 standards, or API CK-4 for diesel engines. The recommended viscosity grade is SAE 5W-30 or 10W-30, depending on ambient temperatures and operating conditions. Always refer to your owner's manual for the most precise recommendation based on your geography and duty cycle.

Capacity: Approximately 10.6 US Quarts (10 liters) with filter change.

Intervals: Engine oil and filter change intervals for commercial vehicles like the NQR are critical. Generally, intervals can range from 10,000 to 20,000 miles or 300-600 engine hours, whichever comes first. However, severe duty cycles (heavy loads, stop-and-go driving, extreme temperatures) may require more frequent changes. Always adhere to the maintenance schedule outlined in your owner's manual and consider oil analysis for extended drain intervals.

Pitfalls: Using gasoline engine oils (e.g., API SN, SP) or oils that do not meet the specified ACEA E6/E9 or API CK-4 standards can lead to premature wear of engine components, reduced diesel particulate filter (DPF) life, and potential engine damage. Never mix different types or brands of oil, especially if they have different specifications.

Engine Coolant

The Isuzu NQR utilizes an Ethylene Glycol-based, Organic Acid Technology (OAT) long-life coolant. Isuzu specifies their own Isuzu Long Life Coolant (LLC), which is typically red or pink in color. It's crucial to use a coolant that is compatible with OAT systems and meets Isuzu's specifications to prevent corrosion and maintain proper engine cooling.

Capacity: Approximately 16.9 US Quarts (16 liters).

Intervals: Long-life coolants have extended service intervals, often 5 years or 100,000 to 150,000 miles. However, regular inspection of coolant levels and condition is always recommended. When replacing, a complete flush and fill is advised.

Pitfalls: Mixing different types of coolants, especially OAT with non-OAT (like HOAT or IAT), can lead to chemical incompatibilities, gelling, reduced corrosion protection, and potential damage to the cooling system components. Always use distilled water if mixing concentrate and avoid tap water due to mineral content.

Transmission Fluid

The 2024 Isuzu NQR can come with different transmission options, most commonly the Aisin A465 automatic transmission or the Eaton Procision automated manual transmission. The fluid requirements differ significantly:

• Aisin A465 Automatic Transmission: Requires genuine Isuzu Automatic Transmission Fluid, which is typically a JWS 3309 equivalent. Consult your owner's manual for the exact Isuzu part number or approved equivalent. Avoid