Complete Oil Specifications
Your 2023 Infiniti QX55’s 2.0L KR20DDET VC-Turbo engine requires 0W-20 full synthetic oil meeting API SP and ILSAC GF-6A standards. The VC-Turbo is the world’s first mass-production variable compression ratio engine, continuously adjusting its compression ratio between 8:1 and 14:1 using a multi-link mechanism driven by an Intelligent Compression Control motor. This unique system makes oil quality especially critical — oil lubricates the multi-link actuator assembly in addition to conventional engine components.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 4.6 quarts |
| Oil Filter | Nissan/Infiniti 15208-65F0E |
| Normal Interval | 5000 miles |
Why 0W-20 is Critical for This Engine
The variable compression mechanism relies on an oil-lubricated harmonic drive actuator that operates continuously throughout driving. Any oil degradation or contamination affects both conventional engine lubrication and the precision actuator system simultaneously. 0W-20 minimises friction losses in the multi-link mechanism, which operates under varying load conditions as compression ratio shifts. API SP’s enhanced oxidation stability is critical because the VC-Turbo generates more heat variation than a fixed-compression engine, accelerating oil breakdown if lesser-rated oils are used.
Using incorrect oil will:
- ❌ Accelerate wear in the multi-link variable compression actuator mechanism
- ❌ Risk actuator position errors if oil viscosity falls outside the designed operating range
- ❌ Increase overall engine wear during the more frequent thermal cycling of a variable-compression system
Infiniti-Approved Oil Brands
-
✅ Infiniti Genuine Motor Oil 0W-20
-
✅ Mobil 1 Advanced Fuel Economy 0W-20
-
✅ Castrol Edge 0W-20
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✅ Pennzoil Platinum 0W-20
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✅ Valvoline Advanced Full Synthetic 0W-20
API SP and ILSAC GF-6A must appear on the container. Infiniti recommends Genuine Motor Oil for all VC-Turbo applications to ensure full compatibility with the multi-link actuation system.
Severe Service Check
You need the 3750-mile interval if you:
- Drive predominantly in stop-and-go urban traffic
- Take frequent short trips under 5 miles
- Tow a trailer (up to the QX55’s 1,500 lb rated capacity)
- Operate in sustained extreme temperatures (above 95°F or below 14°F)
Installation Details
Drain Plug Torque: 25 ft-lbs
The QX55 uses a steel oil pan with an aluminium drain plug — use caution not to cross-thread. Replace the crush washer at every oil change.
OEM Filter: Nissan/Infiniti 15208-65F0E
Aftermarket Filters:
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Mobil 1 M1-108A
-
K&N HP-1008
-
Fram XG3614
Pro Tip: The VC-Turbo has a shorter recommended interval than most modern engines (5,000 miles vs. 7,500–10,000 miles) due to the additional demands of the variable compression mechanism. Follow this interval strictly to protect the actuator assembly.
FAQs
What oil does a 2023 Infiniti QX55 VC-Turbo take? 0W-20 full synthetic oil meeting API SP and ILSAC GF-6A standards.
How many quarts does it need? 4.6 quarts with a new filter, 4.2 without.
What is VC-Turbo and why does it affect oil requirements? VC-Turbo is Infiniti’s variable compression ratio engine. It adds a multi-link actuator system that is oil-lubricated, making oil quality and freshness more critical than in a conventional fixed-compression engine.
Why is the oil change interval shorter than other modern engines? The variable compression mechanism adds wear surfaces not present in conventional engines, and Infiniti specifies 5,000-mile intervals to keep the actuator system properly lubricated with fresh oil.
Is full synthetic required? Yes — API SP and ILSAC GF-6A are full-synthetic specifications only.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-06-06 | Source: 2023 Infiniti QX55 Owner’s Manual (0MQ22-6RA6A)