2021 Subaru Ascent Is Leaking Oil

Troubleshooting Oil Leaks in Your 2021 Subaru Ascent: Causes and Repair Solutions

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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 2021 Subaru Ascent 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 Ascent 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 potential causes of an oil leak in a 2021 Subaru Ascent, and how should I diagnose them?

When diagnosing an oil leak in your 2021 Subaru Ascent, it's essential to adopt a systematic approach that begins with the most accessible checks before moving on to more complex assessments. Start by inspecting under the vehicle for visible signs of oil pooling or dripping, which can help you pinpoint the general area of the leak. Next, check the oil level to determine if there has been a significant drop, indicating a more serious issue. Cleaning the engine and surrounding components is crucial, as it allows you to identify the source of the leak more easily. For a more precise diagnosis, consider adding UV dye to the engine oil; this will illuminate the leak's path under UV light, making it easier to trace. If the source remains elusive, a pressure test can simulate operating conditions, helping to reveal the exact point of the leak. By following this structured diagnostic approach, you can effectively identify and address the oil leak, ensuring your Subaru Ascent remains in optimal condition.

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

When addressing oil leaks in a 2021 Subaru Ascent, it's important to recognize the various common problems that may be at play. A primary concern is the oil pan gasket, which can degrade over time due to wear or improper installation, resulting in leaks. Additionally, worn oil seals, particularly around the crankshaft and camshaft, can lose their sealing ability, allowing oil to escape. The oil filter also warrants attention; if it is not securely fastened or is damaged, it can lead to oil leaking from the filter housing. Another potential issue is the valve cover gasket, which may deteriorate with age or improper installation, causing leaks. Lastly, inspect for cracks in engine components, such as the engine block, as these can lead to significant oil loss. Regular maintenance and inspections are vital for identifying these issues early, ensuring the longevity of your vehicle and preventing costly repairs.

How urgent is it to address the oil leak in my 2021 Subaru Ascent?

Addressing an oil leak in your 2021 Subaru Ascent is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. An oil leak can significantly reduce the oil levels in your engine, leading to inadequate lubrication of vital components. This lack of lubrication can cause severe wear and tear, ultimately resulting in costly engine damage. Furthermore, neglecting an oil leak can lead to overheating, which poses a serious risk of engine failure. The situation is compounded by the safety hazards associated with leaking oil, as it can drip onto hot engine parts, increasing the risk of a fire. Therefore, it is crucial to act swiftly and address any signs of an oil leak to safeguard both your vehicle's performance and your safety on the road.

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2021 Subaru Ascent Leaking Oil: Causes & Repair Costs