2010 Mitsubishi Lancer Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2010 Mitsubishi Lancer 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 2010 Mitsubishi Lancer 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 2010 Mitsubishi Lancer 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.

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 2010 Mitsubishi Lancer?

To effectively diagnose an oil leak in your 2010 Mitsubishi Lancer, begin with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by visually inspecting the area beneath your vehicle for any signs of oil pooling or dripping, as this can provide immediate clues about the leak's location. Next, check the oil level in your engine; a consistently low level may indicate a leak that needs addressing. Pay close attention to the oil filter and drain plug, ensuring they are secure and free from damage, as these are common sources of leaks. Additionally, examine the gaskets and seals within the engine, such as the valve cover and oil pan gaskets, since wear and tear can lead to oil seepage. If the source remains elusive, consider using UV dye in the oil, which can illuminate leaks under a UV light, making them easier to identify. For a more thorough investigation, a pressure test of the oil system can help pinpoint any hidden leaks. If these methods do not yield results, it may be time to consult a professional mechanic who can provide expert assistance and advanced diagnostic tools to resolve the issue effectively. By following this structured approach, you can efficiently diagnose and address the oil leak in your Mitsubishi Lancer.

What are the common causes of oil leaks in a 2010 Mitsubishi Lancer?

When tackling oil leaks in a 2010 Mitsubishi Lancer, it's essential to understand the common problems that may arise. One of the primary culprits is a worn or damaged oil pan gasket, which can deteriorate over time, leading to leaks at the bottom of the engine. Additionally, valve cover gasket leaks are frequent, as this gasket can also wear out, allowing oil to escape from the top of the engine. Another area to inspect is the oil filter housing gasket; if this component fails, it can result in oil leaking near the oil filter, creating a mess and potential engine damage. Furthermore, the rear main seal is another critical point to check, as it can wear out and cause oil to leak from the back of the engine, often leading to significant oil loss. Lastly, don't overlook the oil cooler lines, as leaks in these lines can also contribute to oil loss. By being aware of these common issues, DIYers can effectively diagnose and address oil leaks, ensuring their Mitsubishi Lancer remains in good working condition.

How urgent is it to address the oil leak in my 2010 Mitsubishi Lancer?

Addressing an oil leak in your 2010 Mitsubishi Lancer is not just a matter of routine maintenance; it is a critical safety concern that demands immediate attention. Oil is vital for lubricating engine components, and a leak can lead to a significant loss of oil, resulting in inadequate lubrication that may cause severe engine damage. Moreover, the presence of leaking oil creates a fire hazard, especially if it comes into contact with hot engine parts, which can ignite and lead to dangerous situations. Ignoring the leak can exacerbate the problem, leading to more extensive and costly repairs down the line. Therefore, it is essential to act swiftly to diagnose and repair the oil leak, ensuring the safety and efficiency of your vehicle while preventing further damage. Taking prompt action not only protects your car but also enhances your peace of mind on the road.

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