Jeep Wrangler Oil Leak Causes and How To Fix Them?

Jeep Wrangler oil leak problems are pretty common, but these issues can cause serious damage if not fixed. Hence, it is important to know what causes oil leaks and how to fix them.

Most Jeep Wrangler oil leaks are caused by seals that have worn out heavily. Other causes include gaskets that have become brittle or misaligned, loose bolts or fittings, and improperly installed components.

In this blog post, we’ll cover the considerable common causes of Jeep Wrangler oil leaks and how to address them. We’ll also provide some helpful tips on preventing these leaks from happening in the first place. 

Therefore, if you’re a Jeep Wrangler owner dealing with an oil leak, be sure to read this post! 

What Causes Jeep Wrangler Oil Leak Problems?

Many Jeep Wrangler owners have experienced oil leaks at some point. While the problem can be frustrating, it’s important to understand what causes oil leaks to fix the issue and prevent it from happening again.

1. Faulty Oil Filter

Several factors can contribute to an oil leak, but a flawed oil filter is one of the most common. Over time, the oil filter can become broken or clogged with debris, causing the engine to overheat and leading to an oil leak. 

2. Defective Engine Seals

Another familiar source of oil leaks is the engine seals, which can become brittle and allow oil to seep through. The cause of this problem is usually due to a manufacturing defect. 

The leaks are minor and can be easily fixed with a sealant in some cases. However, in other cases, the leaks can be more serious and require the replacement of the engine seals. 

3. Broken Valve Cover Gasket

The valve cover gasket is a usual reason for the oil leak located under the hood. This gasket seals the opening between the engine and the valve cover, and gradually, it can break down and start to leak.

4. Flawed Oil Pan Seals

Jeep wrangler owners may experience oil leaks due to defective seals in the oil pan. While this problem can be fixed by replacing the seals, it is important to note that the Jeep Wrangler is not the only vehicle affected by this issue. Many other vehicles may also experience oil leaks due to faulty seals.

5. Bad Oil Drain Plug

The oil leak problem seems to stem from the design of the oil drain plug, which is located in a difficult-to-reach spot and is prone to stripping. As a result, many Jeeps drivers have found themselves stuck on the side of the road with a drained oil pan. 

6. Poor Rear Main Seal

An expected place for a jeep wrangler to leak is from the rear main seal., which is located between the engine and transmission. The seal develops defects, allowing oil to bleed out. In some cases, the leak can be so bad that it drips onto the ground while the car is parked.

7. Spoiled Oil Pressure Detector Adapter

A faulty oil pressure detector adapter also causes an oil leak in a jeep wrangler. It is located on the passenger side of the engine, near the oil filter. Over time, the seals on the adapter can deteriorate, causing oil to leak from the engine.

8. Worn Out Oil Filters

There are a few simple theories about what causes the oil leaks, but the most likely explanation is that the oil filters are worn out. 

Slowly, the filters trap less and less oil, allowing it to pass through and leak out. It can cause all sorts of problems, from engine damage to increased emissions.

Oil leaks can also be caused by many other factors, including putting an extreme portion of oil into the engine, using the wrong type of oil, or not changing the oil regularly.

How To Fix Jeep Wrangler Oil Leak Issues?

Jeep Wrangler oil leak issues can be both annoying and dangerous. A small oil leak can quickly turn into a big problem, so it’s important to take care of it as soon as possible. 

There are a few different ways to fix Jeep Wrangler oil leaks. Let’s have a look:

Replace The Plug and Oil Filter:

Whether you notice that your Jeep is leaking oil, the first thing you should do is check the oil filter and plug. If either of these parts is damaged or worn, it can cause oil to leak from the engine. 

To fix this problem, replace the damaged part with a new one. In most cases, this will be all that is necessary to stop the oil leak. 

Tighten Any Loose Bolts:

You can do a few things to fix oil leaks in your Jeep Wrangler. One of the first things you should check for any loose bolts. 

As long as any bolts that hold the engine together are loose, they can cause oil to leak out. Tighten all of the bolts and see if that stops the leak. If not, you may need to replace the leaking gasket or seal. 

Change The Engine Oil:

Another method to solve the oil leak issue is to replace the engine oil. Over time, the oil can break down and become less effective at lubricating the engine. 

It can lead to increased wear and tear, eventually resulting in an oil leak. If you’ve recently changed your oil, check to ensure that you used the correct type of oil for your Jeep Wrangler. 

Replace The Oil Pan Gasket:

The most common cause of oil leaks is the oil pan gasket. This gasket seals the oil pan to the engine and prevents oil from leaking. Over time, the gasket can deteriorate and start to leak. 

To fix this, you need to replace the oil pan gasket. It is a fairly simple process that anyone can do with a few tools. First, you need to remove the old gasket. Then, clean both surfaces and apply a new gasket. Finally, bolt everything back in place, and you’re done! 

Switch The Valve Cover:

If you’ve ever taken your Jeep Wrangler out for a spin and noticed an oil leak, you have a valve cover problem. The good news is that this is an easy fix that you can do yourself with just a few tools and some replacement parts. 

The first thing you’ll need to do is remove the old valve cover. It is usually held in place by a couple of pairs of bolts. Once the old valve cover is off, look at the gasket. Whenever it’s damaged or worn, it will need to be replaced. 

Then, clean the surface of the engine where the new gasket will sit. It will help ensure a tight seal. And install the new valve cover and gasket and tighten the bolts. 

With just a little bit of effort, you can fix that pesky oil leak and get back to enjoying driving your Jeep Wrangler. 

Is It Common For Jeep Wranglers To Leak Oil?

Jeep Wranglers are known for their off-road capabilities and rugged construction. However, some of their models (2012-2017) are also notorious for leaking oil. 

Therefore, it is not uncommon for Jeep Wranglers to leak oil from the engine, transmission, and differentials. While some leaks are minor and do not cause any damage, others can be major and lead to serious engine or transmission problems. 

How Much Does It Cost To Fix Jeep Wrangler Oil Leak Issues?

Jeep Wrangler owners are all too familiar with oil leaks. These common issues can be caused by several factors, ranging from simple wear and tear to more serious engine problems. 

While most leaks can be easily fixed with a little knowledge and the right tools, some may require the help of a professional mechanic. So, What are the costs associated with repairing Jeep Wrangler oil leak issues?

The cost of repairing an oil leak will depend on the severity of the leak and the cause. For example, a small leak from a gasket or seal can usually be fixed without any hassle, and the cost is around $450 where parts ($138-$151) and labor ($225-$283) expenses are included.

On the other hand, a more serious leak that requires replacing an engine part may cost around $1200 to fix. 

Always remember, it’s important to have your Jeep Wrangler checked by a qualified mechanic to ensure that the problem is properly diagnosed and repaired.


In most cases, oil leaks are caused by worn-out gaskets or seals. The gaskets and seals around the oil pan, oil filter, and engine block can degrade over time, allowing oil to ooze out. 

Replacing these parts is relatively simple and can be done without taking the engine apart. Also an oil leak may be caused by a or oil pan at some point. 

These repairs can be more involved, but they are still typically not complex for a qualified mechanic to fix.  Finally, we hope you will be more confident when dealing with this issue since this article offers everything that may help. That said, safe riding!

Related Posts: