2021 Toyota GR Supra Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2021 Toyota GR Supra 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 2021 Toyota GR Supra 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 2021 Toyota GR Supra 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.

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

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 initial steps to diagnose the oil leak in a 2021 Toyota GR Supra?

To effectively diagnose an oil leak in your 2021 Toyota GR Supra, start by locating the source of the leak. Begin with a thorough inspection of the vehicle's underside, looking for any visible signs of oil, such as drips or pools. Once you have a potential area identified, check the oil level in the engine; a lower-than-normal level can indicate a leak. Next, examine the oil filter and drain plug for any signs of looseness or leakage, as these are common culprits. If everything appears secure, inspect the gaskets and seals around the engine for wear or damage, which could also be contributing to the leak. For a more precise diagnosis, consider performing a pressure test on the oil system to pinpoint the exact location of the leak. If these steps do not reveal the source, or if you feel uncertain about the process, it is advisable to consult a qualified mechanic for a professional assessment. By following this structured approach, you can efficiently diagnose and address any oil leak issues in your vehicle.

What are the common causes of oil leaks in a 2021 Toyota GR Supra?

When dealing with oil leaks in a 2021 Toyota GR Supra, 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 deteriorate over time and lead to leaks. Similarly, a worn-out valve cover gasket can cause oil seepage, making it essential to inspect these gaskets regularly. Another potential source of leaks is a faulty oil filter; if the filter is improperly installed or defective, it can result in oil escaping from the engine. Additionally, a loose or damaged oil drain plug can also be a significant factor, as it may allow oil to leak from the oil pan. Lastly, cracks in engine components, such as the engine block, can lead to more severe oil leaks. Addressing these issues promptly is vital to maintaining your vehicle's performance and preventing further damage, so regular inspections and maintenance are highly recommended for any DIY enthusiast looking to keep their Supra in top shape.

How urgent is it to address the oil leak in my 2021 Toyota GR Supra?

Addressing an oil leak in your 2021 Toyota GR Supra is crucial for maintaining the vehicle's performance and safety. An oil leak can lead to a significant loss of lubrication within the engine, which increases friction and heat, potentially resulting in severe engine damage if left unattended. Moreover, neglecting an oil leak can diminish engine efficiency and performance, leading to costly repairs down the line. There are also safety concerns to consider; oil dripping onto hot engine components can create fire hazards. Regularly inspecting your vehicle for signs of leaks and addressing any issues promptly is essential for preserving the health and longevity of your engine. Therefore, it is advisable to take immediate action if you notice any signs of an oil leak to prevent further complications and ensure your Toyota GR Supra operates smoothly.

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2021 Toyota GR Supra Oil Leak Causes & Diagnosis | RepairPal