2018 Honda Accord Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2018 Honda Accord 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 2018 Honda Accord 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 2018 Honda Accord 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.

What are the steps to diagnose an oil leak in a 2018 Honda Accord?

To effectively diagnose an oil leak in your 2018 Honda Accord, begin by locating the source of the leak. Park your vehicle on a flat surface and inspect the area beneath it for any oil spots, which can help pinpoint the leak's origin. Once you have a general idea, start with the oil pan, as it is a common culprit. Look for any visible damage or loose bolts; tightening them may resolve the issue. Next, examine the oil filter, ensuring it is securely installed and free from leaks. The oil drain plug is another critical area to check; make sure it is tight and consider replacing the gasket if you notice any oil seeping. Don’t forget to inspect the valve cover gasket, as wear and tear can lead to leaks. Additionally, the oil pressure sensor should be checked for any signs of leakage. If these components appear intact, broaden your search to include the oil cooler and other seals. By following this methodical approach, you can efficiently identify and address the source of the oil leak, saving time and potentially costly repairs.

What are the common causes of oil leaks in a 2018 Honda Accord?

When dealing with oil leaks in a 2018 Honda Accord, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can wear out over time and lead to leaks. Additionally, worn oil seals around critical engine components, such as the crankshaft and camshaft, can deteriorate, allowing oil to escape. Another potential source of leaks is a loose or damaged oil filter; ensuring that the filter is securely fastened and in good condition is essential. The oil drain plug also deserves attention; if it is not tightened properly or is damaged, it can result in significant oil loss. Lastly, cracks in engine components, such as the engine block, can lead to leaks that require immediate attention. By being aware of these common issues, DIYers can take proactive steps to inspect and address oil leaks, ultimately maintaining the health of their vehicle and preventing further damage. Regular maintenance and thorough inspections are key to catching these problems early.

How urgent is it to address the oil leak in my 2018 Honda Accord?

Addressing an oil leak in your 2018 Honda Accord is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. An oil leak can significantly reduce your vehicle's oil levels, leading to inadequate lubrication of the engine, which can cause severe damage over time. Moreover, neglecting this problem can escalate into more serious complications, such as engine overheating or even catastrophic engine failure, which can be both costly and dangerous. Additionally, the presence of leaking oil poses a safety risk, as it can drip onto hot engine components, increasing the likelihood of a fire. By promptly monitoring and resolving any oil leaks, you not only safeguard your vehicle's performance but also enhance its longevity and ensure your safety on the road. Therefore, it is crucial to take action as soon as you notice any signs of an oil leak in your Honda Accord.

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