Mazda 6 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your Mazda 6 and How to Resolve Them Effectively

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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 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 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.

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

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.

How to Diagnose and Fix Oil Leaks in a Mazda 6?

When tackling oil leaks in your Mazda 6, it's essential to adopt a systematic diagnostic approach. Start by identifying the leak's source; look for oil spots on the ground or smoke from the engine, which can indicate where the problem lies. Once you have a general idea, gather samples of the leaking oil using a white tissue to determine its type by comparing its appearance and smell with your engine oil and ATF. If you're still uncertain, consider adding UV dye to the suspected system and running the engine to help illuminate the leak's origin. Next, inspect critical components such as gaskets and seals, as these are common culprits for oil leaks. Regularly check your oil level to ensure it remains adequate, as a sudden drop can signal a leak. Don't forget to consult your owner's manual for any warning lights related to oil pressure or levels, which could indicate more serious issues. If your efforts don't yield results, seeking professional help from a mechanic or Mazda dealership is a wise choice to ensure your vehicle is properly diagnosed and repaired. By following this structured approach, you can effectively address oil leaks and maintain your Mazda 6's performance.

How to Address Oil Leaks in a Mazda 6?

When dealing with oil leaks in a Mazda 6, it's crucial to understand the common problems that can lead to such issues. One frequent culprit is a worn or damaged oil pan gasket, which can deteriorate over time due to heat and exposure to engine fluids, resulting in leaks. Additionally, the oil filter and drain plug are common areas where leaks can occur, often due to improper installation or wear. Another potential issue is a failing valve cover gasket, which can allow oil to seep out and create visible leaks on the engine. It's also important to consider that older vehicles may experience leaks from seals and gaskets that have hardened or cracked, particularly in the timing cover or rear main seal. By being aware of these common failure modes, you can better diagnose the source of the leak and take appropriate action to maintain your Mazda 6's performance and longevity.

How to Address Oil Leaks in a Mazda 6?

When dealing with oil leaks in your Mazda 6, it’s crucial to act swiftly to prevent further damage to your vehicle and ensure your safety on the road. Ignoring an oil leak can lead to severe engine problems, including overheating and complete engine failure, which can be costly to repair. Start by locating the source of the leak, focusing on common culprits like the oil pan, valve cover gasket, or oil filter. Inspect these areas carefully, as worn gaskets or loose components can exacerbate the issue. Tightening any loose bolts and replacing damaged gaskets can often resolve minor leaks. Additionally, regularly monitoring your oil levels is essential; low oil can lead to inadequate lubrication, increasing the risk of engine damage. If you find that the leak persists despite your efforts, consulting a professional mechanic is advisable to avoid further complications. By addressing oil leaks promptly, you not only maintain the performance of your Mazda 6 but also safeguard your investment and ensure a safer driving experience.

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