2021 Mitsubishi Outlander Sport Is Leaking Oil

Troubleshooting Oil Leak Sources in Your 2021 Mitsubishi Outlander Sport and How to Fix Them

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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 2021 Mitsubishi Outlander Sport 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 Mitsubishi Outlander Sport 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 diagnostic steps to identify the cause of the oil leak in a 2021 Mitsubishi Outlander Sport?

When tackling an oil leak in your 2021 Mitsubishi Outlander Sport, start by thoroughly inspecting the vehicle to pinpoint the source of the leak. Look beneath the car and around the engine and transmission for any visible oil spots or drips. Next, check the oil levels in the engine; low oil levels can indicate a significant leak that needs immediate attention. Pay close attention to the oil filter and drain plug, as these components can often be the culprits behind leaks due to damage or looseness. Additionally, inspect the gaskets and seals within the engine, as wear and tear in these areas are common sources of oil leaks. If the leak remains elusive, consider conducting a pressure test to help identify the exact location of the issue. Should you find the diagnostics challenging or the cause unclear, consulting a qualified mechanic is a wise choice to ensure proper assessment and repair. By following these steps, you can effectively diagnose and address the oil leak, keeping your vehicle in optimal condition.

What are the common causes of oil leaks in a 2021 Mitsubishi Outlander Sport?

When dealing with oil leaks in a 2021 Mitsubishi Outlander Sport, it's essential 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. Additionally, a faulty or improperly installed oil filter can also be a source of oil leakage, so it's crucial to ensure that the filter is correctly fitted. Another area to inspect is the oil drain plug; if it is loose or damaged, it can allow oil to escape from the oil pan. Furthermore, the valve cover gasket, which seals the valve cover to the engine, may develop leaks as it ages. Oil cooler gasket leaks are another possibility, as these gaskets can wear out and cause seepage. Lastly, a leak from the rear main seal, located at the back of the engine, can result in oil pooling on the ground. Addressing these issues promptly is vital to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help you catch these problems early, ensuring your Outlander Sport runs smoothly.

How urgent is it to address the oil leak in my 2021 Mitsubishi Outlander Sport?

Addressing an oil leak in your 2021 Mitsubishi Outlander Sport 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 engine's lubrication system. This lack of lubrication can cause severe damage to engine components over time, leading to costly repairs that could have been easily avoided. Furthermore, an oil leak can result in engine overheating, as the oil is essential for regulating temperature. The risk of overheating not only threatens the integrity of your engine but also poses a serious safety hazard. Leaking oil can drip onto hot engine parts, creating a fire risk that endangers both you and your vehicle. Therefore, it is crucial to address any signs of an oil leak promptly to safeguard your Mitsubishi Outlander Sport's performance, longevity, and your safety on the road.

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2021 Mitsubishi Outlander Sport Oil Leak Issues & Repairs