2016 Mazda 6 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2016 Mazda 6 and How to Address Them Effectively

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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 2016 Mazda 6 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 2016 Mazda 6 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 steps to diagnose the oil leak in a 2016 Mazda 6?

To effectively diagnose an oil leak in your 2016 Mazda 6, start by visually inspecting the engine and the area beneath the vehicle for any signs of oil accumulation or drips. This initial step helps you locate the source of the leak. Next, check the oil level using the dipstick; a significant drop may indicate a leak that needs immediate attention. Focus on the gaskets and seals around critical components such as the oil filter and oil pan, as these are common culprits for leaks. Don’t forget to examine the oil filter itself for any signs of damage or looseness, and ensure the oil drain plug is secure, replacing the gasket if necessary. Additionally, inspect the oil pan for cracks and the valve cover gasket for leaks, as these can also contribute to oil loss. Lastly, consider checking the Positive Crankcase Ventilation (PCV) system for any clogs that might lead to leaks. If the source remains elusive, a pressure test can help pinpoint the leak's location. By following this systematic approach, you can effectively identify and address the oil leak in your Mazda 6.

What are the common causes of oil leaks in a 2016 Mazda 6?

When dealing with oil leaks in a 2016 Mazda 6, it's crucial to understand the common culprits that may be at play. One frequent issue is the wear and tear of the oil pan gasket, which can deteriorate over time, leading to leaks. Similarly, the valve cover gasket is another component that can fail, allowing oil to escape from the engine. Additionally, a faulty oil filter housing gasket can contribute to oil leaks, as can the rear main seal located at the back of the engine. Lastly, the oil cooler seal is also susceptible to deterioration, which can result in oil leakage. Addressing these issues promptly is vital to maintaining engine health and performance, and regular inspections can help catch these problems early, allowing for effective DIY repairs.

How urgent is it to address the oil leak in my 2016 Mazda 6?

Addressing an oil leak in your 2016 Mazda 6 is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Oil leaks can lead to a significant loss of lubrication within the engine, resulting in increased friction and heat that can cause severe engine damage over time. If left unchecked, a low oil level can lead to overheating, which may ultimately result in engine seizure and costly repairs. Moreover, the safety implications of an oil leak cannot be overlooked; oil dripping onto hot engine components poses a fire hazard that could endanger both you and your vehicle. By taking prompt action to fix the leak, you not only safeguard your engine's health but also ensure the safe operation of your car. Therefore, if you notice any signs of an oil leak, it is crucial to address the issue as soon as possible to prevent further damage and maintain the reliability of your Mazda 6.

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