2021 Nissan Maxima Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2021 Nissan Maxima and How to Address Them 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 2021 Nissan Maxima 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 2021 Nissan Maxima 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.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

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 2021 Nissan Maxima?

To effectively diagnose an oil leak in your 2021 Nissan Maxima, begin with a systematic approach that prioritizes simplicity and thoroughness. Start by locating the leak; inspect the area beneath your vehicle for any visible oil drips or pooling, as well as checking for oil stains on the engine and surrounding components. Next, verify the oil level in your engine; a consistently low level may indicate a leak. Pay close attention to the oil filter and drain plug, ensuring they are secure and free from damage. Additionally, examine the gaskets and seals, particularly the valve cover gasket and oil pan gasket, for signs of wear or deterioration. If the source remains elusive, consider using UV dye in the engine oil, which can help illuminate leaks under a UV light. Should these steps not yield results, or if you feel uncertain about the diagnosis, consulting a professional mechanic is advisable for a comprehensive evaluation and repair recommendations. This methodical approach not only aids in identifying the leak but also ensures that you address the issue efficiently and effectively.

What are the common causes of oil leaks in a 2021 Nissan Maxima?

When dealing with oil leaks in a 2021 Nissan Maxima, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can wear out over time and lead to leaks. Additionally, a faulty or improperly installed oil filter can also result in oil escaping, so checking the filter's condition and installation is essential. Another area to inspect is the valve cover gasket, as it can deteriorate with age, causing oil to seep out. Furthermore, leaking oil cooler lines, whether due to damage or looseness, can contribute to the problem. Lastly, a cracked or damaged oil pan itself can be a significant source of leaks. By being aware of these potential issues, DIYers can take proactive steps to inspect and address oil leaks, ensuring their Maxima runs smoothly and efficiently. Regular maintenance and timely inspections are key to preventing more severe engine damage down the line.

How urgent is it to address the oil leak in my 2021 Nissan Maxima?

Addressing an oil leak in your 2021 Nissan Maxima is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. An oil leak can significantly reduce oil levels, leading to inadequate lubrication of engine components, which may result in severe engine damage over time. Furthermore, neglecting this problem can cause the engine to overheat, potentially leading to costly repairs or even complete engine failure. The safety implications are equally concerning, as leaking oil can drip onto hot engine parts, creating a fire hazard. Therefore, it is crucial to act swiftly and resolve any oil leaks to maintain the performance and safety of your vehicle, ensuring that you avoid more serious and expensive issues down the line.

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