2018 INFINITI Q70L Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2018 INFINITI Q70L 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 2018 INFINITI Q70L 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 INFINITI Q70L 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 first steps to diagnose the oil leak in a 2018 INFINITI Q70L?

When diagnosing an oil leak in your 2018 INFINITI Q70L, it's essential to adopt a systematic approach that prioritizes simplicity and effectiveness. Start by locating the leak; inspect the area beneath the vehicle for any oil drips or puddles, and check the engine bay for signs of oil residue. This initial observation can often reveal the leak's source. Next, verify the oil level in the engine, as a significant drop may indicate a serious leak that requires immediate attention. Pay close attention to the oil filter and drain plug, as these components are common culprits for leaks; ensure they are secure and free from oil seepage. Additionally, examine gaskets and seals around the oil pan, valve cover, and oil filter housing, as wear and tear in these areas can lead to leaks. If the source remains elusive, consider performing a pressure test to detect hidden leaks. Should you find yourself unable to pinpoint the issue, consulting a qualified mechanic is advisable for a thorough diagnosis and repair. By following these steps, you can effectively tackle the problem and maintain your vehicle's performance.

What are the common causes of oil leaks in a 2018 INFINITI Q70L?

When dealing with oil leaks in a 2018 INFINITI Q70L, it's essential to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear down over time, leading to leaks. Additionally, worn valve cover gaskets can allow oil to escape from the top of the engine, creating noticeable leaks. Another area to inspect is the oil filter and its housing gasket; if either is faulty, it can result in oil seeping out. Furthermore, oil cooler lines are prone to wear and tear, which can also lead to leaks. Lastly, damaged oil seals, such as the rear main seal or camshaft seals, can deteriorate and contribute to oil loss. Addressing these issues promptly is crucial, as neglecting them can lead to more severe engine damage. Regular maintenance and thorough inspections can help you catch these problems early, ensuring your vehicle runs smoothly and efficiently.

How urgent is it to address the oil leak in my 2018 INFINITI Q70L?

Addressing an oil leak in your 2018 INFINITI Q70L is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which may result in severe engine damage over time. This damage can escalate to engine failure, a costly repair that could leave you with no choice but to replace the entire engine. Furthermore, maintaining the correct oil level is essential for your vehicle's performance and efficiency; low oil can hinder engine function, leading to decreased fuel economy and power. Additionally, oil leaks pose serious safety risks, as they can create slippery road conditions or even ignite if they come into contact with hot engine parts. Therefore, it is crucial to address any signs of an oil leak promptly to safeguard your vehicle's integrity, performance, and your safety on the road.

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