The Infiniti QX56 typically uses synthetic 5W-30 motor oil, though the exact specification can vary by model year and climate, so always verify with your owner's manual or dealer.
Oil viscosity and specification
Here's a general guide to the viscosities commonly specified for the VK56 engine that powers the QX56. Verify the exact grade listed in your manual for your year and region.
- Common recommendation: synthetic 5W-30 for most driving conditions.
- In very hot climates or under heavy load, 5W-40 synthetic may be specified or preferred in some markets.
- Some markets or model updates may note 0W-30 or 0W-40 as alternatives if approved by Infiniti; always verify against your VIN.
Using the wrong viscosity can affect lubrication and fuel efficiency, so confirm the exact specification for your vehicle.
Oil capacity and change intervals
Oil capacity and service intervals vary by year and VK56 variant; consult the owner's manual or a dealership to get the precise figures for your QX56.
- Oil capacity (with filter) varies by year and engine variant—check the manual or service data for your VIN.
- Recommended oil-change intervals are typically every 5,000–7,500 miles (or 6–12 months) under normal driving; more frequent changes may be advised for severe conditions.
Always follow the exact capacity and interval guidance for your vehicle’s year and engine variant.
How to verify the correct oil for your vehicle
Use these steps to confirm the proper oil specification for your QX56.
- Check the owner’s manual and the under-hood sticker for grade, viscosity, and API/ILSAC rating.
- With your VIN, consult Infiniti’s official service portal or call a dealer to confirm the recommended oil for your exact vehicle.
- If in doubt, use a reputable synthetic oil in 5W-30 with the correct API rating (e.g., SN or newer) and a suitable warranty-compliant product.
These steps help ensure you’re using the correct oil for your year, climate, and driving conditions.
Summary
Most Infiniti QX56 models call for synthetic 5W-30 oil as the standard specification, but confirm the exact grade for your year and region in the owner's manual or via Infiniti support. Observing the recommended viscosity, capacity, and change intervals will help maintain engine longevity.