2018 Ford C-Max Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2018 Ford C-Max and How to Address Them Effectively

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Reviewed by
Bo Fader
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 Ford C-Max 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 Ford C-Max 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 2018 Ford C-Max?

To effectively diagnose an oil leak in your 2018 Ford C-Max, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the area beneath your vehicle for any visible oil spots or drips, which can provide immediate clues. Next, examine the oil pan for any signs of cracks or damage, as this is a common source of leaks. Ensure that the oil filter is securely installed, as a loose or damaged filter can also lead to oil loss. Don’t overlook the oil drain plug; it should be tight and free from any leaks. Additionally, inspect the gaskets and seals around the engine, as wear and tear in these areas can contribute to oil leaks. Regularly monitoring your oil levels will help you identify any significant drops that may indicate a leak. If these steps do not reveal the source of the problem, or if the leak persists, it may be time to consult a professional mechanic for a more thorough inspection and repair. By following this diagnostic approach, you can efficiently identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2018 Ford C-Max?

When diagnosing oil leaks in a 2018 Ford C-Max, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can wear out over time and lead to leaks. Additionally, a worn valve cover gasket can allow oil to escape from the top of the engine, creating noticeable leaks. Another potential source of oil leaks is a faulty oil filter; if the filter is improperly installed or defective, it can result in oil seeping out. Furthermore, a damaged or improperly tightened oil drain plug can also be a significant factor, as it may allow oil to leak from the oil pan. Lastly, cracked or worn seals around engine components, such as the crankshaft or camshaft seals, can deteriorate and contribute to oil leaks. 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 Ford C-Max runs smoothly.

How urgent is it to address the oil leak in my 2018 Ford C-Max?

Addressing an oil leak in your 2018 Ford C-Max 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 due to inadequate lubrication, which increases friction among engine components. This can escalate into more significant problems, such as engine overheating or even complete engine failure, which can be costly to repair. For DIY enthusiasts, it’s essential to regularly check your oil levels and inspect for any signs of leaks, such as oil spots under the vehicle or a burning oil smell. If you notice any symptoms, it’s advisable to act quickly—either by attempting a DIY fix or consulting a qualified mechanic. By prioritizing the repair of an oil leak, you not only safeguard your vehicle's performance but also ensure your safety on the road, making it a crucial task for any responsible car owner.

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