2012 Nissan Pathfinder Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2012 Nissan Pathfinder and How to Address Them

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Reviewed by
Bo Fader
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 2012 Nissan Pathfinder 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 2012 Nissan Pathfinder 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 2012 Nissan Pathfinder?

To effectively diagnose the oil leak in your 2012 Nissan Pathfinder, begin with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by locating the leak; inspect the area beneath your vehicle for any visible oil drips or stains, which can provide immediate clues. Next, check the oil level to determine if it is consistently low, as this may indicate a leak. Pay close attention to the oil filter and drain plug, ensuring they are secure and free from damage. Gaskets and seals are common culprits for leaks, so examine these components, particularly the valve cover gasket and oil pan gasket, for any signs of wear. If the source remains elusive, consider using UV dye in the engine oil, which can help illuminate the leak under a UV light. For a more thorough investigation, a pressure test of the oil system can pinpoint the leak's location. If these steps do not yield results or if you feel uncertain, consulting a mechanic is advisable, as they can provide expert insights and solutions. By following this structured diagnostic approach, you can efficiently identify and address the oil leak issue in your Pathfinder.

What are the common causes of oil leaks in a 2012 Nissan Pathfinder?

When diagnosing oil leaks in a 2012 Nissan Pathfinder, it's essential to understand the common problems that may arise. One frequent culprit is the oil pan gasket, which can wear out over time, leading to leaks that can be easily spotted under the vehicle. Another area to inspect is the valve cover gasket; if this component is deteriorated, it can allow oil to seep out, creating a mess and potentially affecting engine performance. Additionally, the oil filter should be checked for tightness and integrity, as a loose or damaged filter can lead to significant oil loss. Don't overlook the seals around critical engine components, such as the crankshaft and camshaft seals, as these can crack or wear down, resulting in leaks. Lastly, ensure that the engine oil is not overfilled, as excess oil can create pressure that forces oil out of seals and gaskets. By addressing these common issues, DIYers can effectively manage oil leaks and maintain their Pathfinder's performance.

How urgent is it to address the oil leak in my 2012 Nissan Pathfinder?

When dealing with an oil leak in your 2012 Nissan Pathfinder, understanding the urgency of the situation is crucial for maintaining your vehicle's performance and safety. A minor leak may seem manageable, but even small oil losses can escalate quickly, leading to significant engine damage if not addressed. Regularly checking your oil levels is essential; a rapid decrease indicates a more severe issue that requires immediate attention. Beyond mechanical concerns, safety is paramount—oil on the road can create hazardous conditions, especially if it ignites upon contact with hot engine components. Additionally, neglecting an oil leak can result in increased friction within the engine, leading to costly repairs down the line. Therefore, it is vital to act swiftly to mitigate risks and ensure the longevity of your Pathfinder.

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