INFINITI QX70 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your INFINITI QX70 and How to Address Them Effectively

Find Repair Location
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 INFINITI QX70 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 INFINITI QX70 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 an INFINITI QX70?

When tackling oil leaks in your INFINITI QX70, start by closely monitoring the oil pressure gauge and warning light, as these indicators can alert you to potential problems before they escalate. Regularly check the engine oil level to catch any unexpected drops, which may signal a leak. Conduct a thorough visual inspection under the vehicle to identify any signs of oil pooling or dripping, particularly around common leak points such as the oil drain plug, oil filter gasket, and rear main seal. If you notice any leaks, lift the vehicle safely to access the undercarriage and drain the engine oil by removing the drain plug. Replace the drain gasket and ensure the plug is tightened to the manufacturer’s torque specifications. After addressing the leak, run the engine to check for any remaining issues, and consider inspecting the oil cooler O-ring, as it is a frequent source of leaks in this model. For persistent leaks, using fluorescent dye can help pinpoint the source, while steam cleaning the area can make it easier to spot new leaks. If you suspect more serious mechanical problems, such as a faulty oil pump or significant engine wear, it’s advisable to consult a certified INFINITI technician for further assistance. By following this diagnostic approach, you can effectively manage oil leaks and maintain the health of your vehicle.

How to Diagnose and Fix Oil Leaks in an INFINITI QX70?

When tackling oil leaks in your INFINITI QX70, it's essential to understand the common problems that can arise within the engine's oil system. One frequent issue is the deterioration of gaskets and seals, particularly around the oil filter and drain plug, which can lead to leaks. Additionally, the rear main seal is another common failure point that may require attention. If you notice a drop in oil pressure or find oil pooling under your vehicle, these could be indicators of a more serious problem, such as a malfunctioning oil pump or significant engine wear. Regularly checking your oil levels and monitoring for any warning lights can help you catch these issues early. If you suspect a leak but can't pinpoint the source, using fluorescent dye can be a helpful diagnostic tool, as it illuminates the leak's origin under UV light. By being aware of these common problems and symptoms, you can take proactive steps to maintain your vehicle's health and address any oil leaks effectively.

How to Address Oil Leaks in an INFINITI QX70?

When it comes to oil leaks in your INFINITI QX70, addressing the issue promptly is crucial to avoid severe engine damage and maintain your vehicle's performance. Ignoring an oil leak can lead to low oil levels, which may cause the engine to overheat or even seize, resulting in costly repairs. Start by identifying the source of the leak; a thorough inspection of the engine and oil system components can reveal where the oil is escaping. If you find the leak, consider using an oil leak stopper as a temporary fix, but be aware that this may not provide a long-term solution. If the leak persists, it’s essential to repair or replace the faulty components, such as gaskets or seals, to prevent further issues. Regular maintenance is key to avoiding future leaks; routinely check your oil levels and inspect for any signs of leakage. By taking these proactive steps, you can safeguard your INFINITI QX70 from potential damage and ensure its longevity on the road.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.