2004 Ford Expedition Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2004 Ford Expedition and How to Fix Them Effectively

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 2004 Ford Expedition 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 2004 Ford Expedition 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 2004 Ford Expedition?

To effectively diagnose an oil leak in your 2004 Ford Expedition, start by locating the leak, which often involves inspecting the area beneath the vehicle for any visible oil puddles or drips, particularly around the engine and transmission. Once you have a general idea of where the leak might be coming from, check the oil level in the engine; a significant drop could indicate a serious leak that needs immediate attention. Next, examine the oil pan for any signs of damage or corrosion, as this is a common culprit for leaks. Don’t forget to inspect the oil filter, as a faulty or damaged filter can also lead to oil escaping. Additionally, valve cover gaskets are known to wear out over time, so check these for any signs of deterioration. Ensure that the oil drain plug is securely tightened, as a loose plug can easily cause leaks. If the source of the leak remains elusive, consider adding UV dye to the engine oil; after running the engine, use a UV light to help pinpoint the leak. If these steps do not resolve the issue, consulting a mechanic for a more thorough inspection is advisable. By following this diagnostic approach, you can systematically identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2004 Ford Expedition?

When dealing with oil leaks in a 2004 Ford Expedition, it's crucial to understand the common culprits that may be at play. One frequent issue is the deterioration of the oil pan gasket, which can wear out over time, leading to leaks. Similarly, valve cover gaskets are prone to wear and can also result in oil escaping from the engine. Another area to inspect is the oil filter housing gasket; if this seal fails, it can create leaks around the oil filter. Additionally, the rear main seal, located at the back of the engine, can deteriorate and cause oil to leak from that area. Lastly, oil cooler lines are susceptible to leaks as they age, which can lead to noticeable oil seepage or drips beneath the vehicle. Addressing these leaks promptly is essential to prevent further engine damage and ensure optimal vehicle performance. Regular inspections and maintenance can help you catch these issues early, allowing for a DIY fix before they escalate.

How urgent is it to address the oil leak in my 2004 Ford Expedition?

Addressing an oil leak in your 2004 Ford Expedition is not just a matter of maintenance; it is a pressing concern that requires immediate attention. Ignoring this issue can lead to a significant drop in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication increases friction and wear, potentially resulting in severe engine damage that could incur costly repairs. Moreover, oil leaks pose a serious fire hazard, especially when oil seeps onto hot engine parts, creating a dangerous situation. Additionally, neglecting an oil leak can adversely affect your vehicle's performance, leading to decreased fuel efficiency and overall engine functionality. Therefore, it is crucial to prioritize the repair of any oil leaks to safeguard your vehicle's health and ensure your safety on the road.

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.

Causes of Oil Leaks in 2004 Ford Expedition Explained