Infiniti QX50
Data verified by Nick Marchenko, PhD
The Infiniti QX50, produced from 2014 to 2022, features three distinct engine options that require specific oil maintenance practices. The 2.0L I-4 KR20DDET engine, found in models from 2019 to 2022, has an oil capacity of 5 quarts and requires 5W-30 viscosity oil. For the 3.7L V-6 VQ37VHR engine, available in 2014 and from 2015 to 2017, the oil capacity is slightly higher at 5.2 quarts, also using 5W-30 viscosity. Additionally, the coolant capacities vary, with the 2.0L engine needing 8.1 quarts and the 3.7L engine requiring between 9.1 and 9.5 quarts depending on the model year.
Regular oil changes are crucial for maintaining engine performance and longevity. Following the manufacturer's recommendations for oil type and capacity, along with timely coolant checks, ensures that your Infiniti QX50 operates efficiently. Whether you own the newer KR20DDET or the earlier VQ37VHR engines, adhering to these specifications will help you avoid potential engine issues and keep your vehicle running smoothly.
Infiniti QX50 Oil Capacity
| Engine | Oil Capacity | Viscosity | Coolant | Years |
|---|---|---|---|---|
| KR20DDET KR KR20 The KR20DDET engine has a displacement of 2.0L I-4. The power output is 255 hp with a torque of 275 lb-ft. | 5.0 qt | 5W-30 | 8.1 qt | 2022, 2021, 2020, 2019 |
| VQ37VHR VQ VHR The VQ37VHR engine has a displacement of 3.7L V-6. It features a bore and stroke of 332. The power output is 270 hp. | 5.2 qt | 5W-30 | 9.1 qt | 2017, 2016, 2015 |
| VQ37VHR VQ VHR The VQ37VHR engine has a displacement of 3.7L V-6. It features a bore and stroke of 332. The power output is 270 hp. | 5.2 qt | 5W-30 | 9.5 qt | 2014 |
Infiniti QX50 – Frequently Asked Questions
How many quarts of oil does the Infiniti QX50 take?
The Infiniti QX50 oil capacity varies by engine: KR20DDET: 5.0 qt; VQ37VHR: 5.2 qt; VQ37VHR: 5.2 qt. Always confirm the exact capacity for your specific engine before an oil change.
What type of oil does the Infiniti QX50 use?
The Infiniti QX50 uses 5W-30 engine oil across all its engine variants. Full synthetic oil meeting API/ILSAC specifications is strongly recommended for optimal engine protection and performance.
What is the coolant capacity of the Infiniti QX50?
The coolant capacity for the Infiniti QX50 varies by engine: KR20DDET: 8.1 qt; VQ37VHR: 9.1 qt; VQ37VHR: 9.5 qt. Use the coolant specification listed in the owner's manual for your engine variant.
What type of oil does the Infiniti QX50 use?
The Infiniti QX50 uses 5W-30 viscosity oil for all its engine options, including the 2.0L I-4 and the 3.7L V-6 engines.
How many quarts of oil does the Infiniti QX50 take?
The oil capacity for the Infiniti QX50 varies by engine: the 2.0L I-4 KR20DDET requires 5 quarts, while the 3.7L V-6 VQ37VHR needs 5.2 quarts.
How often should I change oil in a Infiniti QX50?
It is generally recommended to change the oil in your Infiniti QX50 every 5,000 to 7,500 miles, depending on driving conditions and oil type.
What is the coolant capacity of the Infiniti QX50?
The coolant capacity for the Infiniti QX50 varies by engine: the 2.0L I-4 KR20DDET requires 8.1 quarts, while the 3.7L V-6 VQ37VHR requires between 9.1 and 9.5 quarts.
Does the Infiniti QX50 need synthetic oil?
While synthetic oil is not strictly required, it is highly recommended for the Infiniti QX50 to enhance engine performance and protection.
What happens if I use the wrong oil viscosity in my Infiniti QX50?
Using the wrong oil viscosity can lead to inadequate lubrication, increased engine wear, and potentially severe engine damage over time.
What is an oil life monitor and how does it work?
An oil life monitor tracks the engine's operating conditions and calculates when to change the oil based on factors like mileage and driving habits.
Can I mix synthetic and conventional oil?
While it's technically possible to mix synthetic and conventional oil, it's not recommended as it may reduce the effectiveness of the oil.
How do I know if my Infiniti QX50 has an oil leak?
Signs of an oil leak include oil spots under the vehicle, a drop in oil levels, or an illuminated oil pressure warning light on the dashboard.
What causes excessive oil consumption?
Excessive oil consumption can be caused by worn engine components, such as piston rings or valve seals, or by using the wrong oil viscosity.
Should I check my oil when the engine is hot or cold?
It's best to check your oil when the engine is warm but not hot, as this allows for a more accurate reading on the dipstick.
What is the difference between an oil change and a flush?
An oil change involves draining old oil and replacing it with new oil, while a flush cleans the engine's internals and removes sludge before adding new oil.