2018 Ford F-250 Super Duty Is Leaking Oil

Identify and Fix Oil Leaks in Your 2018 Ford F-250 Super Duty

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Reviewed by
Devin Cabugcal
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 F-250 Super Duty 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 F-250 Super Duty 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.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

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 Ford F-250 Super Duty?

To effectively diagnose an oil leak in your 2018 Ford F-250 Super Duty, start by visually inspecting the engine bay and the area beneath the vehicle. Look closely at the oil pan, oil filter, and oil drain plug, as these are common leak points. Next, check the oil level using the dipstick; a significant drop may indicate a leak that needs immediate attention. Pay special attention to gaskets and seals, as wear or damage in these areas can lead to leaks. Additionally, observe for any oil stains or puddles under the vehicle after it has been parked for a while, as these can help you pinpoint the leak's location. If the source remains elusive, consider performing a pressure test to simulate operating conditions, which can reveal hidden leaks. However, if you find the diagnosis challenging or the issue appears complex, it’s wise to consult a qualified mechanic for a thorough evaluation and repair. By following this structured approach, you can efficiently identify and address oil leaks in your truck.

What are the common causes of an oil leak in a 2018 Ford F-250 Super Duty?

When diagnosing an oil leak in your 2018 Ford F-250 Super Duty, it's crucial to consider several common culprits that could be at play. One frequent issue is a worn or damaged oil pan gasket, which can deteriorate over time and lead to leaks. Additionally, a faulty or improperly installed oil filter can also be a source of oil leakage, so checking its condition and installation is essential. Another area to inspect is the oil drain plug; if it is loose or damaged, it can allow oil to escape. Furthermore, the valve cover gasket plays a vital role in sealing the valve cover, and if it becomes worn, it can result in oil seeping out. Lastly, the rear main seal, located at the back of the engine, is another potential leak point that can develop issues over time. Addressing these problems promptly is vital to prevent further engine damage, and regular maintenance checks can help you catch these issues early, ensuring your vehicle runs smoothly.

How urgent is it to address an oil leak in a 2018 Ford F-250 Super Duty?

Addressing an oil leak in your 2018 Ford F-250 Super Duty is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Oil leaks can lead to a significant loss of engine lubrication, which is essential for preventing overheating and protecting vital engine components. If left unchecked, this can escalate into severe engine damage, resulting in costly repairs or even complete engine failure. Moreover, the safety implications cannot be overlooked; leaking oil poses a fire hazard, especially if it comes into contact with hot engine parts. Additionally, oil leaks have detrimental effects on the environment, contaminating soil and water sources. By promptly addressing the leak, you not only safeguard your vehicle's performance and longevity but also contribute to a safer driving experience and a healthier ecosystem. Therefore, if you notice any signs of an oil leak, it is crucial to act swiftly to mitigate these risks and ensure the continued reliability of your Ford F-250.

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