2007 Subaru Impreza Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2007 Subaru Impreza and How to Fix Them Effectively

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Reviewed by
Aisha
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 2007 Subaru Impreza 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 2007 Subaru Impreza 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 initial steps to diagnose an oil leak in a 2007 Subaru Impreza?

To effectively diagnose an oil leak in your 2007 Subaru Impreza, begin with a thorough visual inspection of the vehicle. Look for any visible signs of oil accumulation, such as droplets or stains beneath the car, particularly in areas like the rear of the engine, around the valve cover gaskets, and near the crank seal. Next, check the oil level using the dipstick; this will help you determine if the leak is significant enough to warrant immediate attention. If the oil level is low, ensure you top it up before starting the engine to avoid further damage. Pay special attention to common leak sources, such as the valve cover gaskets and the front crank seal, as these are frequent culprits in Subarus. To pinpoint the leak's location, place a white plate or cardboard under the vehicle to catch any dripping oil, which can help you identify the source more accurately. If you find it challenging to locate the leak or if the situation seems complex, consider consulting a professional mechanic for a more detailed inspection. Regularly monitoring your oil levels will also provide insight into the severity of the leak and help you take timely action to protect your engine.

What are the common causes of oil leaks in a 2007 Subaru Impreza?

When dealing with oil leaks in a 2007 Subaru Impreza, it's essential to understand the common culprits that may be contributing to the problem. One of the primary sources is the valve cover gaskets, which can deteriorate over time, leading to cracks or shrinkage that allow oil to escape. Additionally, the timing cover gasket and front crankshaft seal are notorious for wear, particularly the older black seals that are less durable than their newer counterparts. Another area to inspect is the camshaft seals, which, while relatively accessible, require some disassembly of the engine's front components. Don't overlook the spark plug tube seals, as they can also fail and cause oil to seep into the spark plug tubes, potentially leading to engine misfires. The oil separator plate, especially if it's the original plastic version, can leak as it ages, and replacing it with a metal version is advisable, albeit a more involved task. Lastly, while less frequent, the rear main seal can be a source of leaks, but replacing it can be challenging and may exacerbate the issue if not done correctly. Regularly checking the oil filter and oil cooler gasket is also crucial, as a loose filter or a faulty gasket can lead to oil leaks. By systematically inspecting these components, DIYers can effectively diagnose and address oil leaks in their Subaru Impreza, ensuring a smoother and more reliable driving experience.

How urgent is it to address the oil leak in a 2007 Subaru Impreza?

Addressing an oil leak in a 2007 Subaru Impreza is not just a matter of routine maintenance; it is an urgent issue that demands immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which can cause overheating and rapid wear of engine components. This not only risks costly repairs but could also result in complete engine failure, leaving you with a hefty bill and a non-operational vehicle. Moreover, the safety implications cannot be overlooked; oil leaks can create hazardous conditions, such as the risk of fire from oil on hot engine parts or the potential for vehicle malfunction while driving, which could lead to accidents. Common sources of oil leaks in Subaru vehicles include the valve cover gasket, head gaskets, and oil pan, among others. Therefore, it is crucial to promptly identify the source of the leak and consider consulting a professional mechanic to ensure a thorough and effective repair. Taking swift action can save you from more significant issues down the line, making it essential to prioritize this repair for both your vehicle's health and your safety.

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2007 Subaru Impreza Oil Leak Causes & Repairs | RepairPal