2018 Lincoln MKZ Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2018 Lincoln MKZ and How to Address Them Effectively

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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 2018 Lincoln MKZ 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 Lincoln MKZ 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 steps to diagnose the oil leak in a 2018 Lincoln MKZ?

To effectively diagnose an oil leak in your 2018 Lincoln MKZ, start by thoroughly inspecting the engine bay and the area beneath the vehicle to locate any visible signs of oil. Pay close attention to the oil pan, as this is a common source of leaks. Next, check the oil level using the dipstick; a significant drop in oil level can indicate a leak that needs addressing. After confirming the oil level, examine the oil filter and drain plug for any signs of leakage, as these components are often overlooked. Additionally, inspect the gaskets and seals around the engine, as wear and tear can lead to leaks. If the source remains elusive, consider adding UV dye to the oil, which can help you pinpoint the leak when illuminated with a UV light. For a more thorough assessment, performing a pressure test can reveal leaks that may not be visible under normal conditions. If these steps do not lead to a resolution, consulting a professional mechanic is advisable to ensure the issue is accurately diagnosed and repaired. By following this structured approach, you can efficiently identify and address oil leaks in your vehicle.

What are the common causes of oil leaks in a 2018 Lincoln MKZ?

When dealing with oil leaks in a 2018 Lincoln MKZ, 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 leaks. Additionally, valve cover gaskets are another common source of oil leaks, as they can also wear out and fail to create a proper seal. The oil filter housing gasket is yet another potential problem area; if it fails, it can result in significant oil loss. Furthermore, the rear main seal, located at the back of the engine, is known to develop leaks as the vehicle ages. Lastly, the oil cooler seals can wear out, contributing to oil leaks as well. Addressing these issues promptly is essential to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help you catch these problems early, ensuring your Lincoln MKZ runs smoothly.

How urgent is it to address the oil leak in a 2018 Lincoln MKZ?

Addressing an oil leak in your 2018 Lincoln MKZ is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring an oil leak can lead to severe engine damage, resulting in costly repairs that could have been easily avoided. Moreover, a vehicle with an oil leak may not perform at its best, leading to decreased fuel efficiency and overall performance, which can affect your driving experience. Safety is another paramount concern; oil leaks can create hazardous conditions on the road, increasing the risk of accidents for both you and other drivers. Additionally, the environmental impact of oil leaks cannot be overlooked, as they can contaminate local ecosystems and water sources. Therefore, it is essential to act swiftly and address any signs of an oil leak to ensure the longevity of your vehicle, maintain optimal performance, and uphold safety standards on the road.

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