2018 INFINITI QX30 Is Leaking Oil

Address Oil Leaks in Your 2018 INFINITI QX30 Effectively

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2018 INFINITI QX30 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2018 INFINITI QX30 is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What steps should I take to diagnose the oil leak in my 2018 INFINITI QX30?

To effectively diagnose an oil leak in your 2018 INFINITI QX30, begin by locating the source of the leak, which often involves checking for visible oil spots under the vehicle. Once you have a general area identified, inspect the oil pan for any cracks or damage that could be contributing to the leak. Next, ensure that the oil filter is securely installed, as a loose or improperly fitted filter can also lead to oil loss. Don’t forget to check the oil drain plug; it should be tightened correctly to prevent leaks. Additionally, examine the gaskets and seals within the engine for signs of wear or damage, as these components are common culprits for oil leaks. Regularly monitoring your oil levels can provide further insight into the severity of the leak, as a significant drop may indicate a more serious issue. If these steps do not reveal the source of the leak or if the problem persists, it may be time to consult a mechanic for a professional diagnosis and repair. By following this diagnostic approach, you can systematically identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2018 INFINITI QX30?

When dealing with oil leaks in a 2018 INFINITI QX30, it's crucial to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear down over time, leading to leaks. Similarly, a worn valve cover gasket can also contribute to oil escaping from the engine. Additionally, problems with the oil filter or its housing can result in leaks, so it's important to check these components regularly. A damaged oil cooler is another potential source of leaks that should not be overlooked. Lastly, ensure that the oil drain plug is secure and undamaged, as a loose or faulty plug can easily lead to oil loss. By being aware of these common causes, DIY enthusiasts can take proactive steps to inspect and address oil leaks, ultimately protecting their vehicle's engine and enhancing its performance. Regular maintenance and timely inspections are key to preventing more serious issues down the line.

How urgent is it to address an oil leak in a 2018 INFINITI QX30?

Addressing an oil leak in your 2018 INFINITI QX30 is crucial, as neglecting this issue can lead to severe consequences. The severity of the leak plays a significant role in determining how urgently it should be addressed; even a minor seepage can escalate into a major problem if left unattended. Insufficient oil levels can compromise engine performance, leading to increased friction and potential damage over time. Moreover, the risk of engine damage is substantial, as a significant drop in oil levels can result in overheating and premature wear of internal components. Safety is another critical concern; oil leaks can create hazardous conditions, such as slippery roads or even fire risks if oil drips onto hot engine parts. Additionally, the environmental impact of oil leaks cannot be overlooked, as they can contaminate soil and water sources. Therefore, it is essential to act promptly to mitigate these risks, ensuring the longevity of your vehicle, your safety, and the protection of the environment.

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2018 INFINITI QX30 Leaking Oil: Causes & Repairs | RepairPal