2021 Nissan Frontier Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your 2021 Nissan Frontier and How to Fix 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 Frontier 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 Frontier 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 are the initial steps to diagnose the oil leak in a 2021 Nissan Frontier?

When diagnosing an oil leak in a 2021 Nissan Frontier, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the area beneath the vehicle for any visible oil spots or puddles, which can provide clues about the leak's origin. Next, conduct a thorough inspection of the engine, focusing on components like the oil pan, valve cover gasket, oil filter, and oil drain plug for any signs of oil residue or buildup. Checking the oil level is also crucial; a lower-than-normal level may indicate a leak that needs addressing. Pay special attention to the oil filter and drain plug, ensuring they are secure and free from damage. Finally, examine the oil pan for any cracks or holes that could be contributing to the leak. By following these steps, you can effectively narrow down the source of the oil leak and determine the necessary repairs.

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

When diagnosing oil leaks in a 2021 Nissan Frontier, it's essential to be aware of the common problems that can lead to this issue. A primary concern is the oil pan gasket, which can wear down over time, resulting in leaks that may go unnoticed until they cause significant damage. Additionally, the oil filter plays a critical role; if it is faulty or improperly installed, it can lead to oil escaping from the system. Another area to examine is the oil drain plug; if it is loose or damaged, it can also be a source of leaks. Furthermore, the valve cover gasket is prone to wear, allowing oil to leak from the top of the engine, which can be particularly problematic. Lastly, don’t overlook the oil cooler seal, as issues here can also contribute to oil leaks. By regularly inspecting these components and addressing any issues promptly, you can help maintain your Nissan Frontier's performance and prevent costly repairs down the line.

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

Addressing an oil leak in your 2021 Nissan Frontier is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which compromises engine lubrication and can result in severe damage to vital engine components. Furthermore, a leaking engine can overheat, leading to catastrophic mechanical failures that could leave you stranded or, worse, necessitate costly repairs. The safety implications are equally alarming, as oil dripping onto hot engine parts poses a fire risk, endangering both you and your vehicle. By promptly monitoring and addressing any signs of an oil leak, you not only safeguard the performance and longevity of your Frontier but also ensure a safer driving experience. Therefore, it is crucial to take action without delay to mitigate these risks and maintain the reliability of your vehicle.

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2021 Nissan Frontier Oil Leak Causes & Repair Costs