2020 Mazda 6 Is Leaking Oil

Diagnosing Oil Leak Sources in Your 2020 Mazda 6 and Effective Repair Strategies

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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 2020 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 2020 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 an oil leak in a 2020 Mazda 6?

To effectively diagnose an oil leak in your 2020 Mazda 6, start by locating the source of the leak, which often begins with checking for oil spots on the ground where the vehicle is parked. Once you have a general idea of where the leak might be coming from, inspect the oil pan for any visible damage or loose bolts that may need tightening. Next, examine the oil filter to ensure it is properly installed and free from leaks. The oil drain plug is another critical area to check; make sure it is secure and consider replacing the gasket if you notice any signs of leakage. Additionally, inspect the valve cover gasket, as a damaged gasket can lead to significant oil loss. Don’t overlook the oil cooler and oil pressure sensor, as these components can also be culprits in oil leaks. Throughout this process, keep a close eye on your oil levels to gauge the severity of the leak and monitor any changes. By following this diagnostic approach, you can systematically identify and address the source of the oil leak, ensuring your Mazda 6 remains in optimal condition.

What are the common causes of oil leaks in a 2020 Mazda 6?

When diagnosing oil leaks in a 2020 Mazda 6, it's essential to understand the common problems that may arise. One frequent culprit is the oil pan gasket, which can degrade over time, leading to leaks at the bottom of the engine. Similarly, the valve cover gasket, located at the top, can wear out and allow oil to escape, often resulting in visible leaks on the engine's surface. Additionally, a faulty oil filter or drain plug can contribute to leaks; if either is loose or damaged, oil may seep out during operation. Another potential issue is a cracked or damaged oil cooler, which can lead to significant oil loss if not addressed. Lastly, various oil seals, such as those around the camshaft or crankshaft, can deteriorate, causing leaks that may not be immediately visible. By being aware of these common causes, DIYers can take proactive steps to inspect and repair their Mazda 6, ensuring the vehicle runs smoothly and efficiently.

How urgent is it to address the oil leak in my 2020 Mazda 6?

Addressing an oil leak in your 2020 Mazda 6 is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which is vital for the smooth operation of your vehicle. Additionally, the presence of leaking oil poses a significant safety risk, as it can drip onto hot engine components, increasing the likelihood of a fire. Furthermore, delaying repairs can escalate the problem, resulting in more extensive and costly fixes down the line. Therefore, it is crucial to act swiftly and address any signs of an oil leak to maintain the performance and safety of your Mazda 6, ensuring that you avoid potential breakdowns and hazardous situations on the road.

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