2017 Subaru Legacy Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2017 Subaru Legacy 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 2017 Subaru Legacy 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 2017 Subaru Legacy 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 are the steps to diagnose and fix an oil leak in a 2017 Subaru Legacy?

When tackling an oil leak in your 2017 Subaru Legacy, it's essential to adopt a systematic diagnostic approach. Start by examining the area where you typically park your vehicle for any oil puddles or spots, as this can provide immediate clues about the leak's location. Next, inspect the engine bay for visible signs of oil, focusing on common leak points such as the oil pan, oil filter, valve cover gaskets, and oil drain plug. If the source remains elusive, consider using a UV dye, which can help illuminate the leak under a black light. Once you've identified the leak's origin, you can proceed with repairs. For minor issues, such as a loose oil drain plug or a leaking oil filter, simply tightening or replacing these components may suffice. However, if the valve cover gaskets are worn or the oil pan is damaged, replacement will be necessary. In cases where the leak stems from engine seals, it may be prudent to consult a professional mechanic. By following this methodical approach, you can effectively diagnose and address oil leaks, ensuring your Subaru remains in optimal condition.

What are the common causes of oil leaks in a 2017 Subaru Legacy?

When dealing with oil leaks in a 2017 Subaru Legacy, it's crucial to understand the common culprits that may be at play. One frequent issue is the deterioration of the oil pan gasket, which can wear out over time, leading to leaks. Similarly, valve cover gaskets are prone to wear and can also be a source of oil escaping from the engine. Another area to inspect is the oil filter housing gasket; if this seal fails, it can result in noticeable oil leaks. Additionally, the rear main seal, located at the back of the engine, can develop leaks as it ages, causing oil to drip from the engine's underside. Lastly, the seals around the oil cooler can wear out, contributing to oil leakage. Addressing these issues promptly is essential to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help you catch these problems early, ensuring your Subaru Legacy runs smoothly.

How urgent is it to address the oil leak in my 2017 Subaru Legacy?

Addressing an oil leak in your 2017 Subaru Legacy is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication can result in severe engine damage over time, leading to costly repairs or even complete engine failure. Additionally, an oil leak can cause the engine to overheat, further exacerbating the risk of serious mechanical issues. Beyond mechanical concerns, there are safety implications to consider; leaking oil can drip onto hot engine parts, creating a fire hazard that endangers both the vehicle and its occupants. Regularly monitoring for oil leaks and addressing them promptly is crucial for maintaining the performance and longevity of your Subaru Legacy. Therefore, if you notice any signs of an oil leak, it is imperative to take action immediately to safeguard your vehicle and ensure its safe operation.

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