Genesis G90 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your Genesis G90 and How to Address Them Promptly

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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 Genesis G90 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 Genesis G90 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.

How to Diagnose and Fix Oil Leaks in a Genesis G90?

To effectively diagnose and fix oil leaks in your Genesis G90, begin with a careful inspection of the engine area, particularly around the oil pan and engine block. Look for any signs of oil residue, wetness, or dripping, as these can indicate potential gasket issues that may require replacement. Utilizing a UV light can enhance your search for leaks, revealing hidden sources that are not immediately visible. It’s also crucial to adopt a top-down approach when diagnosing; if you find oil residue beneath the vehicle, trace the leak back to its origin starting from the upper engine components. Regular maintenance is key to preventing leaks, so adhere to the manufacturer’s schedule for oil and filter changes, typically every 3,000 to 7,000 miles. By following these steps, you can not only identify the source of oil leaks but also maintain the overall health of your vehicle, ensuring it runs smoothly for years to come.

How to Diagnose and Fix Oil Leaks in a Genesis G90?

When diagnosing oil leaks in a Genesis G90, it's essential to be aware of common problems that can contribute to this issue. One frequent culprit is a worn or damaged oil pan gasket, which can deteriorate over time due to heat and pressure, leading to leaks. Additionally, the oil filter may not be properly sealed, resulting in oil seeping out during operation. Another area to inspect is the valve cover gasket, as it can also wear out and allow oil to escape, especially in older vehicles. Furthermore, loose or damaged oil drain plugs can create leaks, so ensuring they are secure is crucial. Lastly, consider the possibility of leaks from the oil cooler lines, which can corrode or become loose. By understanding these common failure modes, you can systematically check each component, making it easier to pinpoint the source of the leak and take the necessary steps to fix it. Regular maintenance and timely inspections will not only help in identifying these issues early but also prolong the life of your engine.

How to Address an Oil Leak in a Genesis G90?

When dealing with an oil leak in your Genesis G90, it is crucial to act swiftly to prevent further damage to your vehicle and ensure your safety on the road. Ignoring an oil leak can lead to severe engine problems, including reduced lubrication, overheating, and even catastrophic engine failure. Start by identifying the source of the leak, as it could stem from various components such as oil system parts or engine gaskets. A thorough inspection of these areas is essential; damaged or worn components may require immediate repair or replacement. Pay particular attention to the engine gaskets, as they are common culprits for oil leaks. Additionally, if your vehicle has a turbocharger, check the oil supply pipe for any issues, as loose seals or insufficient fittings can exacerbate the problem. If you find yourself uncertain about the source or the necessary repairs, do not hesitate to consult a professional mechanic. Addressing these issues promptly not only safeguards your vehicle's performance but also enhances your driving safety, making it imperative to tackle oil leaks without delay.

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