Mitsubishi Montero Sport Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your Mitsubishi Montero Sport and How to Fix Them

Find Repair Location
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 Mitsubishi Montero 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 Mitsubishi Montero 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.

Troubleshooting Oil Leaks in a Mitsubishi Montero Sport

When troubleshooting oil leaks in your Mitsubishi Montero Sport, begin by conducting a thorough visual inspection of the engine and surrounding areas. Look for obvious signs of oil accumulation, particularly around common leak points such as the oil pan, valve covers, and gaskets. Check the tightness of the drain plug and inspect for any external damage that may have occurred from previous accidents. If you notice oil seeping from the exhaust manifold studs, this could indicate a more specific issue that requires further investigation into the exhaust system or engine components. Pay attention to the rear of the motor, as leaks in this area may suggest a failing camshaft seal. If the oil leak persists, consider performing a compression test or leak-down test to evaluate the condition of the piston rings, valve stem seals, and valve guides. Regular maintenance, including oil changes with the appropriate type of oil and additives, can significantly reduce the likelihood of leaks and enhance the overall performance of your vehicle. By following this diagnostic approach, you can effectively identify and address oil leaks, ensuring your Mitsubishi Montero Sport remains reliable and efficient.

How to Address Oil Leaks in a Mitsubishi Montero Sport?

When tackling oil leaks in a Mitsubishi Montero Sport, understanding common problems is crucial for effective DIY repairs. One of the primary culprits of oil leaks in this vehicle is the failure of oil system components, which can include seals, gaskets, and the oil pan. Engine gaskets, particularly those around the valve cover and oil filter, are also frequent sources of leaks. It's essential to regularly inspect these areas for signs of oil accumulation or splatters, as they can indicate a developing issue. If you notice a leak, a temporary solution could involve using an oil leak stopper, which can be added through the oil fill hole to help seal minor leaks. However, for more significant leaks, such as those stemming from worn rear cam O-ring seals, a more involved repair may be necessary, requiring you to replace the affected parts. By being vigilant about these common problems and addressing them promptly, you can maintain your Montero Sport's performance and prevent more extensive damage down the line.

Why is it Important to Address Oil Leaks in a Mitsubishi Montero Sport?

Addressing oil leaks in your Mitsubishi Montero Sport is not just a matter of routine maintenance; it is a critical step in ensuring the longevity and safety of your vehicle. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which increases friction and heat within the engine components. This can escalate into costly repairs or even necessitate a complete engine replacement, significantly impacting your finances. Moreover, maintaining proper oil levels is essential for optimal engine performance; a leak can hinder your vehicle's efficiency and responsiveness. Beyond mechanical concerns, oil leaks pose environmental risks, as they can contaminate local ecosystems and contribute to pollution. Additionally, oil spills on roadways create hazardous conditions that can lead to accidents, endangering not only your safety but also that of other drivers. Therefore, it is imperative to address any signs of oil leaks promptly to safeguard your vehicle, your wallet, and the environment.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.