How Often Should You Change Hydraulic Oil in a Tractor

If you’re a farmer, you know the importance of tractor hydraulics. Without clean and functioning hydraulics, your tractor can’t do its job. That’s why it’s important to change the hydraulic oil regularly. But how often should you do it? Keep reading to find out! When it comes to tractor maintenance, changing the hydraulic oil is one of the most important tasks.

However, many people are unsure of how often this should be done. In this blog post, we will provide you with some tips on maintaining your tractor’s hydraulic system and oil properly. We will also discuss how often should you change hydraulic oil in a tractor. Let’s get started!

How Often Should You Change Hydraulic Oil in a Tractor

Five Factors That Determine How Often Should You Change Hydraulic Oil in a Tractor:

1. The Usage of Oil:

The amount of oil used over time, as the tractor is being operated, will determine how often you need to change hydraulic oil in a tractor. For example, if the hydraulic system uses 1 gallon every 4 hours it operates, you would need to change the hydraulic oil in a tractor at least four times within that same day. The usage of the hydraulic oil will determine how fast it gets dirty and needs to be changed.

2. The Age of Oil:

As time passes, the quality of hydraulic oil degrades as it sits inside a hose reel or reservoir. However, if an operator only changes their hydraulic oil once a year, then that is perfectly fine as long as the oil being used is still of good quality.

Suppose an operator changes their hydraulic oil every four months. In that case, it might be time to consider changing more often to keep problems from arising due to old hydraulic fluid not doing its job as effectively as it should.

3. The Type of Oil Used:

Synthetic oils have better lubricating properties than petroleum-based or mineral oils. They can also flow better at lower temperatures. These are very beneficial properties to have in a hydraulic oil for various reasons. Still, they can also mean that you should change your hydraulic oil more frequently than what is recommended by manufacturers.

4. Size of the Engine in the Tractor:

The larger the engine is in a tractor, the more heat it will generate while being operated. When an engine generates heat, so does the hydraulic oil that moves through it. The hotter hydraulic oil gets, the quicker it can break down and cause damage to various components of a tractor if allowed to sit too long without being replaced with fresh hydraulic oil.

It should be noted that continuously operating a hydraulic system at higher temperatures, such as when tractors are used to apply fertilizer and pesticides, will break down hydraulic oil much faster than normal.

The Engine Generates Heat

5. The Environmental Conditions:

The environment where a tractor operates affects hydraulic oil quality over time. For example, factors such as humidity and rainfall will cause the hydraulic oil in a tractor to break down faster if it is not changed in a timely manner.

Another factor that can affect the condition of hydraulic oil in a tractor is the cleanliness of the air, such as when operating near dusty conditions or when operating on gravel roads which kick up dust into the air when tractors drive over them.

The Complete Guide to Change Your Tractor’s Oil Yourself

Now that you know the factors on how often should you change hydraulic oil in a tractor, here we have outlined the steps to change your tractor’s oil yourself.

Step 1: Identify Your Machine’s Specifications

The first thing that you need to know is what type of oil your machine needs. Different tractors have different specifications for their hydraulic systems, so it’s important to read the owner’s manual and understand exactly what type of oil you should be using in your tractor.

Step 2: Drain the Oil from the Hydraulic System

Before you drain all of the oil from your tractor’s hydraulic system, make sure that you disconnect the hydraulics from whatever they are hooked up to. To find a safe and convenient way to drain all of the oil out of a tractor’s hydraulic system, it is best to elevate the tractor on a hydraulic jack.

Disconnect the Hydraulics System

Step 3: Remove the Oil Filler Cap

Once you get your tractor elevated up on a hydraulic jack, get underneath of it and remove the oil filler cap from your engine’s filter. After this is done, use a drain pan to catch all of the oil that drains out of the system into an easily disposable container.

Step 4: Collect Supplies

In order to begin the process of draining out the oil from your tractor’s hydraulic system, you will need to have a few different supplies. To complete the process of draining oil from your tractor, you need to have drain oil, a new hydraulic oil filter, some paper towels or rags, and an oil pan that is large enough to hold all of the old hydraulic oil.

Step 5: Locate Your Tractor’s Oil Filter

If your owner’s manual does not show you exactly where your tractor’s oil filter is, you should take the time to look around your engine compartment until you find it. This part of a tractor has a round lid that can be easily removed with a socket wrench. The oil filter will have a large O-ring that needs to be replaced and its housing that can also be re-used.

Step 6: Reinstall the Oil Filter

Once you have installed your new oil filter in its housing, make sure that you put it back together tightly. Because of the tight seal required to work properly, it may be difficult for some people to wrench this part of a tractor back onto its engine.

Step 7: Tighten the Drain Plug

Now that your oil filter is back in place and re-tightened onto the engine, you need to ensure that all of the excess oil has been drained from your tractor’s hydraulic system. If you find that there is still some hydraulic oil left over, remove the oil pan from underneath your machine and empty any excess fluid.

Step 8: Add New Hydraulic Oil

After your oil pan is empty, add your new hydraulic oil to the fill line you found on the side of your tractor’s engine. When you have added in all of the required oil for a full refill, use a funnel to pour it straight into your machine’s oil filter.

Add Your New Hydraulic Oil

Step 9: Add Oil to the Reservoir

Once you have added your new hydraulic oil into the appropriate hose attached to your machine’s filter, it is time to add fresh hydraulic oil into the tractor’s reservoir tank. To do this, use a funnel and place it directly above where you will add the new oil.

Step 10: Check for Leaks

After you have added in all of your oil, check to ensure that no leaks are coming from any part of your tractor. If you find a leak during this process, tighten down any bolts or screws were necessary to fix the issue. Also, double-check that all fluid levels are where they need to be.

After doing this, get behind your tractor and check for any leaks that may not have been visible while you were underneath it. If everything is in working order, turn your machine on and allow it to run for a few minutes so the oil can circulate properly.

When to Change Hydraulic Fluid in Your Tractor?

Questions often arise about how often should you change hydraulic oil in a tractor. After all, many of the components in the hydraulics system are fully or partially lubricated by the oil, so it makes sense to change it on schedule.

The fact is that hydraulic oil does not last forever. It breaks down over time and becomes contaminated with dirt and other particles. That can eventually cause problems with the hydraulics system since hydraulic fluid absorbs vibrations and prevents metal-on-metal contact in the hydraulics components. It also allows those components to slide easily as the tractor’s hydraulic pump activates them.

How Often Should You Change Hydraulic Oil

How Does a Hydraulic System Work on a Tractor?

A hydraulic system allows mechanics to change the height of the planter, mower, implement, etc. It is powered by a pump that works with the tractor’s oil reservoir and hydraulic lines.

This system uses liquid known as hydrostatic oil, which carries out several functions: lubricating and cooling certain parts of the machinery, transferring energy under pressure, etc. The oil must be changed periodically to maintain the system in good condition and avoid serious damage that could be very costly to repair.


The tractor is an essential part of a farm. Therefore, it’s essential to have the right tools for maintaining it when needed so that you can get back to work as soon as possible with minimal interruption in productivity. We’ve outlined some maintenance tips for your tractor here that will help keep it running smoothly and efficiently until next time!

This article has provided some important information about how often should you change hydraulic oil in a tractor and what other tasks are recommended for good upkeep. Remember always to be safe when working on any equipment! If you have any questions in mind, feel free to comment below!

Jennifer Branett
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