2021 Genesis G90 Is Leaking Oil

Troubleshooting Oil Leaks in Your 2021 Genesis G90: Causes and Repair Solutions

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Reviewed by
Aisha
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 2021 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 2021 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.

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 initial diagnostic steps to identify the source of an oil leak in a 2021 Genesis G90?

When tackling an oil leak in a 2021 Genesis G90, it's essential to adopt a systematic diagnostic approach that begins with straightforward methods before progressing to more complex solutions. Start with a thorough visual inspection of the engine and undercarriage, looking for any obvious signs of oil, such as puddles or stains. This initial step can often reveal the leak's source without further intervention. Next, check the oil levels to determine if there has been a significant loss, which may indicate a leak. Pay close attention to the oil filter and drain plug, as these components can sometimes be the culprits behind leaks if they are loose or damaged. Additionally, inspect the gaskets and seals, particularly the valve cover and oil pan gaskets, as these are common areas where leaks occur. If the source remains elusive, consider performing a pressure test on the oil system to uncover hidden leaks. For a more advanced method, adding UV dye to the engine oil can help pinpoint the leak's location when illuminated with a UV light. By following these steps, you can effectively diagnose and address the oil leak in your Genesis G90, ensuring your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2021 Genesis G90?

When diagnosing oil leaks in a 2021 Genesis G90, it's crucial to understand the common problems that may arise. One of the primary culprits is the degradation of gaskets and seals, which can wear out over time due to heat and pressure, leading to leaks. Additionally, if the oil filter is not properly tightened during an oil change, it can result in oil seeping from the filter housing. Another potential issue is a cracked oil pan, often caused by road debris or impacts, which can create a significant leak at the bottom of the engine. Furthermore, a worn-out oil drain plug may fail to seal effectively, allowing oil to escape. Lastly, faulty oil cooler lines can also contribute to leaks, as any damage or wear in these lines can lead to oil loss. Addressing these issues promptly is essential to maintain engine health and performance, and regular inspections can help catch these problems early, making DIY repairs more manageable.

How urgent is it to address the oil leak in my 2021 Genesis G90?

Addressing an oil leak in your 2021 Genesis G90 is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring an oil leak can lead to a cascade of problems, including severe engine damage due to low oil levels, which can compromise the vehicle's performance and efficiency. Moreover, an oil leak poses safety risks, as it can create slippery surfaces that increase the likelihood of accidents. The longer you wait to fix the leak, the more extensive and costly the repairs may become, potentially leading to a situation where minor maintenance turns into a major overhaul. Therefore, it is essential to act swiftly to ensure your vehicle remains safe, efficient, and in optimal working condition.

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2021 Genesis G90 Oil Leak Causes & Repair Costs | RepairPal