Why Chainsaw Bar Oil Shouldn’t Leak

Chainsaws are powerful tools used for a variety of tasks, from felling trees to clearing brush. They are incredibly useful but, like any tool, they require regular maintenance and upkeep.

One of the most important parts of keeping your chainsaw in good condition is making sure it doesn’t leak bar oil. Not only can leaking bar oil be a messy nuisance, but it can also cause serious damage to your chainsaw if left unchecked.

Let’s take a closer look at why you should make sure your chainsaw bar oil isn’t leaking.

What is Bar Oil?

Bar oil is an essential lubricant for chainsaws; it helps reduce friction between the chain and the guide bar and helps to prevent the chain from getting too hot during operation.

Should Chainsaws Leak Bar Oil

The bar and chain oil also act as a coolant and help to keep the chain running smoothly and efficiently. Without the right type of bar oil for your chainsaw, your chainsaw chain will eventually overheat. This can eventually lead to injury, permanent damage or even failure of the chain itself.

Why Does Bar Oil Leak?

There are several reasons why bar oil may leak from your chainsaw. Some of the most common causes include:

  • Poor maintenance – if you don’t keep your chainsaw properly maintained, it can cause all sorts of issues, including bar oil leaks. Regular cleaning, sharpening and lubrication are all essential to keeping your chainsaw in good working order. You also need to learn how to store a chainsaw so it doesn’t leak oil – vertical storage reduces the chances of oil leaks.
  • Damaged seals or gaskets – if the seals or gaskets that hold the bar oil in place become damaged, they can start to leak. The good thing is that it is an easy fix and can be done by replacing the damaged parts with new ones.
  • Worn-out chainsaw chain – a damaged or poorly working chainsaw chain can cause bar oil to leak. If your chain is worn, it may not be applying adequate pressure to the guide bar, which can cause unwanted leaks. To fix this issue, you need to replace your chainsaw chain with a new one that properly fits your chainsaw’s guide bar.
  • Dirty/Clogged air filters – if your chainsaw’s air filter is dirty or clogged, it can cause problems with the engine. This means that your chainsaw won’t be able to properly lubricate the guide bar, leading to a potential bar oil leak.
  • Damaged gaskets or seals around the oil tank – if the cap or gaskets around the oil tank become cracked or damaged, this can also lead to bar oil leaks.

Thankfully, there are a few simple steps you can take to help prevent your chainsaw from leaking bar oil. The first is to make sure that you’re properly maintaining your chainsaw – clean it.

Another great way to prevent leaks is to check your chainsaw for any signs of damage on a regular basis. If you notice any issues with the seals or gaskets, it’s important to address them right away so that they don’t get worse and cause major leaks.

Also wrongly storing your chainsaw, too much bar oil, or overfilling your oil sump can cause additional problems.

You should also regularly inspect your chainsaw chain for damage, wear and tear. If you notice any issues with your chain, it’s important to replace it right away before it leads to bar oil leaks.

The Importance of Regular Maintenance

Regular maintenance is essential to keep your chainsaw working properly and safely.

It’s especially important that you check for leaks in your chainsaw regularly, even if you don’t see any right away.

It’s always possible that some might be occurring beneath the surface where you can’t see them. By checking for leaks and keeping your chainsaw properly maintained, you can help prevent major problems and keep yourself safe during all your woodcutting activities.

If you make sure that all parts are in good condition before using it, you can avoid unexpected leaks and enjoy many years of reliable use from your chainsaw.


Chainsaws are powerful tools that require regular maintenance in order to function properly and safely, one of those key maintenance items is checking for leaks in your chainsaw’s bar oil system.

A leaking bar oil system can cause serious damage if left unchecked, so it’s important to make sure that all parts are in good condition before using your saw every time.

With regular attention, you’ll ensure optimal performance from your saw – and peace of mind knowing that you’re using your chainsaw safely.