2018 Mitsubishi Outlander Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2018 Mitsubishi Outlander and How to Address Them

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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 2018 Mitsubishi Outlander 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 2018 Mitsubishi Outlander 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 are the initial steps to diagnose an oil leak in a 2018 Mitsubishi Outlander?

When diagnosing an oil leak in your 2018 Mitsubishi Outlander, begin with a thorough visual inspection of the engine and undercarriage to identify any visible signs of oil, such as drips or pools. This initial step is crucial as it can often reveal the source of the leak quickly. Next, check the oil level in the engine; a significant drop may indicate a serious leak that needs immediate attention. Pay close attention to the oil filter and drain plug, as these components can sometimes be the culprits behind leaks. If everything appears secure, turn your focus to the gaskets and seals around the engine, particularly the valve cover and oil pan gaskets, which are common areas for leaks. If the source remains elusive, consider adding UV dye to the oil, which can help illuminate the leak under UV light. Finally, if necessary, a pressure test of the oil system can uncover hidden leaks that are not visible during a standard inspection. By following these steps, you can effectively diagnose and address oil leaks in your vehicle, ensuring it runs smoothly and efficiently.

What are the common causes of oil leaks in a 2018 Mitsubishi Outlander?

When dealing with oil leaks in a 2018 Mitsubishi Outlander, it's crucial to understand the common culprits that may be at play. One frequent issue is a worn or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Similarly, a faulty valve cover gasket can cause oil to seep out, indicating a need for replacement. Another potential source of leaks is the oil filter; if it is loose or damaged, it can allow oil to escape from the engine. Additionally, cracked or worn seals around engine components, such as the crankshaft or camshaft, can also contribute to oil leakage. Lastly, overfilling the engine with oil can create excess pressure, resulting in leaks. Addressing these issues promptly is essential not only for maintaining engine performance but also for preventing further damage. Regular inspections and maintenance can help you catch these problems early, allowing for a DIY fix before they escalate.

How urgent is it to address the oil leak in my 2018 Mitsubishi Outlander?

Addressing an oil leak in your 2018 Mitsubishi Outlander is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. An oil leak can significantly reduce the oil levels in your engine, leading to inadequate lubrication for vital components. This lack of lubrication can cause severe engine damage over time, resulting in costly repairs that could have been avoided. Furthermore, neglecting an oil leak can lead to engine overheating, which poses a serious risk of engine failure. The situation is compounded by safety concerns, as leaking oil can drip onto hot engine parts, creating a fire hazard. 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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