2015 Buick Verano Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2015 Buick Verano and How to Address Them

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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 2015 Buick Verano is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A failure in oil system components, such as a worn oil pump or clogged oil filter, can lead to 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 2015 Buick Verano 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 2015 Buick Verano?

To effectively diagnose an oil leak in your 2015 Buick Verano, start by investigating the area beneath your vehicle for any signs of leaking fluid. Placing a white plastic plate under the car can help you catch the liquid and identify its color, which may indicate the source of the leak. Next, check for external leaks by examining the oil system components and engine gaskets, as these are common culprits. If the oil pressure warning light is illuminated on your dashboard, this could signal low oil pressure or a malfunctioning oil pressure sensor, both of which may contribute to the leak. If no external leaks are visible, consider the possibility of internal leaks, which could stem from worn piston rings, damaged cylinder walls, or issues with the head gasket or valve stem seals. Conducting an oil consumption test can also be beneficial, but ensure that your Engine Control Module (ECM) is updated and inspect for any obvious leaks beforehand. By following this diagnostic approach, you can systematically identify the source of the oil leak and determine the necessary repairs for your vehicle.

What are the common causes of oil leaks in a 2015 Buick Verano?

When dealing with oil leaks in a 2015 Buick Verano, it's crucial to recognize the various common problems that could be at play. One of the primary culprits is the failure of oil system components, which can lead to significant leaks if not addressed. Additionally, leaking engine gaskets are frequent offenders, often resulting from wear and tear over time. Internal leaks, such as those caused by worn piston rings or damaged pistons, can also contribute to oil loss, making it essential to monitor engine performance closely. Issues with the oil pump can further exacerbate the situation, leading to inadequate oil circulation and potential engine damage. While synthetic oil is recommended for its benefits, it may pose challenges during the engine break-in period, potentially leading to leaks. Lastly, other factors such as sensor malfunctions, timing belt issues, or high oil consumption without visible leaks should not be overlooked. By understanding these common causes, DIY enthusiasts can better diagnose and address oil leaks, ensuring their Buick Verano remains in optimal condition.

How urgent is it to address the oil leak in a 2015 Buick Verano?

When dealing with an oil leak in your 2015 Buick Verano, understanding the urgency of the situation is crucial for both safety and vehicle longevity. While minor leaks may allow for temporary driving with regular oil level checks, neglecting the issue can lead to severe consequences, including engine damage and decreased performance. It's essential to identify the source of the leak as soon as possible; this not only helps in determining the necessary repairs but also prevents further complications that could arise from continued driving. A thorough inspection can provide insights into the severity of the leak and the potential costs involved in fixing it. By addressing the leak promptly, you can avoid more significant repairs down the line, ensuring your vehicle remains in optimal condition and safe to drive.

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2015 Buick Verano Leaking Oil: Causes & Repair Costs