2021 Subaru Forester Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2021 Subaru Forester and How to Address Them Effectively

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Reviewed by
Devin Cabugcal
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 Subaru Forester 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 Subaru Forester 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.

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 Subaru Forester?

To effectively diagnose an oil leak in your 2021 Subaru Forester, begin by locating the leak's source. Start by inspecting the area beneath your vehicle for any visible oil drips or pools, as this can provide immediate clues. Next, turn your attention to the engine components, particularly the oil pan, oil filter, and valve cover gasket, looking for any signs of oil residue or leaks. It's also crucial to check the oil level in your engine; a significant drop may indicate a leak. Don’t overlook the oil drain plug, as a loose or damaged plug can be a common culprit for oil leaks. Additionally, examine the oil filter for any signs of damage or leaks, as a faulty filter can contribute to the problem. As you inspect, keep an eye out for oil stains or residue on various engine parts and hoses, which can help pinpoint the leak's location. If you find it challenging to identify the source or feel uncertain about the next steps, consulting a mechanic or professional technician is advisable for a thorough diagnosis and repair. By following this structured approach, you can systematically assess the situation and take the necessary actions to resolve the oil leak in your Subaru Forester.

What are the common causes of oil leaks in a 2021 Subaru Forester?

When diagnosing oil leaks in a 2021 Subaru Forester, 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 valve cover gasket can allow oil to escape from the top of the engine, creating visible drips. Another potential source of leaks is a loose or damaged oil filter; ensuring that the filter is properly secured can prevent oil from leaking from the filter housing. It's also important to check the oil drain plug, as a loose or damaged plug can result in oil seeping from the oil pan. In rare cases, a cracked engine block may be the source of the problem, though this is less common. Addressing these issues promptly is essential to maintain engine health and performance, and regular inspections can help catch these problems early, allowing for effective DIY repairs.

How urgent is it to address the oil leak in a 2021 Subaru Forester?

Addressing an oil leak in your 2021 Subaru Forester is not just a matter of routine maintenance; it is a pressing concern 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 issue can cause the engine to overheat, potentially leading to costly repairs or even complete engine failure. The safety implications are equally alarming, as leaking oil can drip onto hot engine parts, creating a fire hazard. By addressing the oil leak promptly, you not only safeguard the performance and longevity of your vehicle but also ensure your safety on the road. Therefore, if you notice any signs of an oil leak, it is crucial to take action without delay to prevent further damage and maintain the reliability of your Subaru Forester.

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