2018 Jeep Wrangler Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2018 Jeep Wrangler and How to Fix 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 2018 Jeep Wrangler 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 Jeep Wrangler 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.

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 steps should I take to diagnose the oil leak in my 2018 Jeep Wrangler?

To diagnose an oil leak in your 2018 Jeep Wrangler, begin by locating the source of the leak, which often involves checking for visible signs of oil on the ground beneath the vehicle. Once you have a general area identified, check the oil levels to confirm if there has been a significant drop, as this can indicate a leak. Next, inspect the oil filter and drain plug for any signs of leakage or looseness, as these components are common culprits. If everything appears secure, turn your attention to the gaskets and seals within the engine, as wear or damage here can lead to leaks. Additionally, examine the oil pan for cracks and the valve cover gasket for signs of deterioration. Don’t forget to check the oil pressure sensor, as a malfunctioning sensor can also contribute to oil leaks. If you are unable to pinpoint the source of the leak after these checks, it may be time to consult a professional mechanic for a more comprehensive diagnosis. By following this structured approach, you can effectively troubleshoot and potentially resolve the oil leak issue in your Jeep Wrangler.

What are the common causes of oil leaks in a 2018 Jeep Wrangler?

When diagnosing oil leaks in a 2018 Jeep Wrangler, it's essential to consider several common problems that could be at play. One of the primary culprits is a worn or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Additionally, a faulty valve cover gasket may also contribute to oil seepage, especially if it has become brittle or cracked. Another frequent issue arises from a leaking oil filter; if the filter is not properly installed or has become loose, it can easily allow oil to escape. Furthermore, a damaged oil drain plug can be a source of leaks, particularly if it is not securely tightened or has sustained damage. Lastly, keep an eye on the seals around various engine components, such as the crankshaft and camshaft seals, as these can wear out and lead to oil leaks as well. Regular inspections and maintenance can help identify these issues early, allowing for timely repairs and ensuring your Jeep Wrangler remains in optimal condition.

How urgent is it to address the oil leak in a 2018 Jeep Wrangler?

When it comes to addressing an oil leak in a 2018 Jeep Wrangler, the urgency cannot be overstated. Ignoring this issue can lead to a cascade of problems that not only jeopardize the vehicle's performance but also pose significant safety risks. An oil leak can quickly deplete oil levels, resulting in inadequate lubrication for engine components. This lack of lubrication increases friction and wear, which can escalate into severe engine damage and costly repairs. Moreover, if the oil leak is left unchecked, it can lead to engine overheating and even complete failure, leaving you stranded and facing the prospect of an expensive engine replacement. Additionally, maintaining proper oil levels is essential for optimal engine performance and fuel efficiency; neglecting a leak can lead to decreased power and potential breakdowns. Safety is another critical concern, as leaking oil can create fire hazards if it comes into contact with hot engine parts. Therefore, it is imperative to address any signs of an oil leak immediately to safeguard your vehicle's integrity, performance, and your own safety on the road.

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2018 Jeep Wrangler Oil Leak Causes & Repairs | RepairPal