Can I Use Transmission Fluid In My Log Splitter?

When it comes to a log splitter, transmission fluids are an integral part of its functionality. Without them, the machine can’t function as intended. Transmission fluids improve the overall performance of the splitter but also need to be maintained regularly to keep their performance consistent. Transmission fluids are used in a variety of machines that require power from a motor including log splitters, chainsaws, motorcycles, and even tractors.

In this article, we’re going to dive deeper into the importance of transmission fluids in log splitters and also the best ones in the market suitable for your use. 

transmission fluid

How do Log Splitters Work?

Before we dwell further on the purpose of transmission fluid in log splitters, let’s first get to know how to log splitters function. We’re all aware that a log splitter is a machine that can split logs into two smaller logs which can then be used for firewood stockpiling, construction, and fencing. 

Whether your log splitter is a gas or electric model, it functions like a person using an ax to cut wood. Normally, they are powered by a hydraulic pump that either swings the blade towards a log or pushes a log towards the blade for splitting. Operating a log splitter is quite simple, you just have to place the log on a designated place in the log splitter, then bam! It does all of the cutting for you. 

Are Fluids Important for a Log Splitter?

YES. You need to make sure that your log splitter has a sufficient amount of fluids in the reservoir all the time before you use it regardless of the model and type of your log splitter. Keep in mind that operating a log splitter without a sufficient amount of fluid in the reservoir can lead to severe damage to the hydraulic pump. Moreover, if that happens, your log splitter is in danger of losing its warranty. 

Always remember to never mix different types of hydraulic fluids. Follow the instruction manual and use only the approved type of lubricant. If ever you have no idea about the fluid currently used in your log splitter, the best thing to do is to drain the fluid completely then use an appropriate one instead. 

Can I Put Transmission Fluid in a Log Splitter?

YES. Transmission fluids keep your log splitters working as they should. It doesn’t matter if you’re using the electric model or the gas model, it is recommended that you top up the transmission fluids in your log splitter. It keeps the engine working as smoothly as it should without compromising its efficiency and durability in the long run. 

What is the Difference Between Transmission Fluid and Hydraulic Fluid?

Technically speaking, transmission fluid is a type of hydraulic fluid. It is a medium that’s formulated to transmit power from the engine to the transmission. On the other hand, hydraulic fluid is a medium that transmits the power in the hydraulic system. Other types of hydraulic fluid include multigrade engine oil and conventional & antiwear hydraulic oil. 

Hydraulic fluids are responsible for avoiding corrosion, dissipating heat, lubricity, fire, and flash resistance, and controls the temperature of your log splitter. 

What are the best Transmission Fluids for a Log Splitter?

There are a lot of transmission fluids in the market right now. If you’re buying for the first time, it wouldn’t be a surprise if you become overwhelmed. So, in this article, we’re gonna deeply tackle the three (3) best transmission fluids to use for your log splitter. 

Dexron III Automatic Transmission Fluid

Dexron has long been a trusted brand of Automatic Transmission Fluid (ATF) which was created by General Motors (GM). The recommended ATF for log splitters is the Dexron III Automatic Transmission Fluid, it has a lot of upgrades and improvements but the latest for Dexron III was established in 2003, the Dexron III (H). This oil has longer maintenance of friction properties and anti-shudder properties perfect for your log splitter. 

10W AW Hydraulic Oil 

This fluid is guaranteed to be non-foaming and easily available from online stores, hardware stores, automotive supplies, and home improvement supply stores. 10W AW Hydraulic Oil offers good protection against oil thickening, high-temperature deposits, varnish, and oil degradation. It also cleans the hydraulic systems to impose less wear and protects the valves against vane sticking. 

Pro-Mix AW-32 Hydraulic Fluid

This is a premium-grade fluid carefully designed to be used on all hydraulic systems where anti-wear hydraulic fluid is suggested. It is perfect to use for your log splitter because it has anti-foaming and anti-wear additives to effectively release entrained air. 


Whether you’re a new owner or a long-time user of log splitters, it is your duty and responsibility to be knowledgeable enough about your log splitter’s fluids. What are the use of transmission and hydraulic fluid? Where should you buy one? How do you know the right type of transmission fluid to put in your log splitter? What are the best transmission fluids in the market right now? These are just some of the questions you should and always know. Take care of your log splitters and happy splitting!