2015 BMW M6 Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2015 BMW M6 and How to Address Them Effectively

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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 BMW M6 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 BMW M6 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

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

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 BMW M6?

To effectively diagnose the oil leak in your 2015 BMW M6, start by visually inspecting the engine for any signs of oil accumulation or wetness, focusing on common leak points such as the valve cover gasket, timing cover gasket, and oil filter housing. This initial assessment can often reveal the source of the leak without the need for extensive disassembly. Next, regularly check your oil levels to identify any significant drops that may indicate a leak. If you notice a consistent decrease in oil levels, it’s crucial to investigate further. While DIY methods can be effective, don’t hesitate to consult a trusted BMW specialist if the source of the leak remains elusive or if the repair seems beyond your skill level. Their expertise can save you time and ensure that the issue is resolved correctly, allowing you to maintain the performance and reliability of your vehicle.

What are the common causes of oil leaks in a 2015 BMW M6?

When dealing with oil leaks in a 2015 BMW M6, it's essential to understand the common culprits that may be at play. One of the primary sources of leaks is the valve cover gasket, which can wear out over time, allowing oil to seep out. Additionally, as the vehicle ages, the engine gaskets and seals can degrade, further contributing to oil loss. Another frequent issue arises from the oil filter housing gasket, particularly if you notice oil pooling on the left side of the engine. Identifying these problems early can help you take the necessary steps to repair them, ensuring your BMW M6 remains in optimal condition and preventing potential engine damage. Regular inspections and maintenance can go a long way in addressing these issues before they escalate.

How urgent is it to address the oil leak in my 2015 BMW M6?

Addressing an oil leak in your 2015 BMW M6 is an urgent matter that should not be overlooked. Oil leaks can significantly compromise engine performance, leading to overheating and potentially catastrophic engine failure if not resolved promptly. The longer you wait, the more likely you are to experience persistently low oil levels, which can inflict serious damage on your engine over time. Additionally, the source of the leak may not be immediately apparent, making it essential to investigate and rectify the issue quickly to avoid further complications. Ignoring the symptoms of an oil leak can result in more extensive damage and ultimately higher repair costs, making timely intervention not just a matter of maintenance, but a critical step in safeguarding your vehicle's longevity and performance. Therefore, if you notice any signs of an oil leak, it is imperative to take action immediately to protect your investment and ensure the smooth operation of your BMW M6.

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