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Can I Use Synthetic Oil in My Pressure Washer?

Fact Checked By Daniel Wood | Post Updated On: April 29, 2023

If the question comes to your mind that can I use synthetic oil in my pressure washer. Read the entire article to get the full idea on pressure washer oil!

Yes! You can use synthetic oil in a pressure washer undoubtedly but it depends on the pump category, and brand to brand. Not all the machine support synthetic oil so you must check the user manual before using oil!

Synthetic oil is a form of lubricant used in the engines of pressure washers, motorcycles, cars, and other machines to make the engine run smoothly, reducing its heat.

What kind of oil should I use in my machine, synthetic or mineral?

A common question which is asked by pressure washer users when the time comes to change the oil in their machines. You can surely use any kind of lubricant oil in your pressure washer. But it’s advisable to use the oil which is recommended for your machine. Different devices have methods and different built quality, which decides what graded oil should be used there. To understand better about oil and take the decision for your pressure washer, you must read the entire article.

What are Mineral Oil and Synthetic Oil?

Mineral oil is taken out from the ground as crude oil and refined for multiple times before it can be used. On the other hand, synthetic oil is mostly made in laboratories with the help of crude oil and applying different mechanisms. Thus, an easy way we can say that mineral oil is a natural oil and synthetic oil is made in factories.

mineral oil vs synthetic oil

In mineral oil, you will find the molecules are of different shapes and sizes, whereas synthetic oils contain molecules of similar shapes and sizes. This is because the size of the molecules reacts differently in changed weather conditions. Dissimilar molecules tend to break down or become heated easily in hot weather, whereas similarly sized molecules don’t break easily and become less heated. We use lubricants in our engines to reduce engine heat, and mineral and synthetic oil serve the purpose.

Can I use synthetic oil in my pressure washer pump?

can i use synthetic oil in my pressure washer

Synthetic oil can be freely used in pressure washing machines without any doubt. But, as mentioned earlier, different engines are made with varying levels of tolerance and support different lubricants. Before you change the oil in your device, you must entirely go through the user manual, where you will find details about its pump oil. Before putting synthetic oil in, make sure that your machine supports it.

You can read more to know about: What Kind Oil Does a Pressure Washer Use?

Can I use synthetic oil in my Honda power washer?

Can I use synthetic oil in my Honda power washer

Honda is a well-known brand for pressure washers and many other machines such as automobiles, etc. Their power washers are widely used all over the world by many users. You can use the 10W-30 synthetic oil for your Honda pressure washer. Many users have used this oil in their Honda pump and got very good results and performance. So you can use synthetic oil in your pressure washer without worrying much.

What viscosity is pressure washer pump oil?

Keeping in mind the region’s climatic conditions, the manufacturers make their machines that support different types of lubricant oil. For example, most pressure washers support SAE 10W-30 or 10W-40 oil that ensures the smooth running of its pump.

The SAE measurement 10W-30 means that the velocity of the oil is rated 10W when the engine is cold and 30 when the engine is hot. Therefore, it’s always advisable to check the user manual and put the exact velocity oil as mentioned.


Being a sincere user of pressure washers, you shouldn’t just go and pick any lubricant for your machine. Different pumps support different lubricant oil, and you must use the oil recommended by the company.

For example, if you use different velocity oil, you might not get the best performance from the pressure washer. Mineral and synthetic, both types of oil are used as a lubricant for a pressure washer pump. You can use anyone that suits your machine the best.

About Daniel Wood

Daniel has completed his graduation mechanical engineering from a reputed university in US. He worked as a technical engineer in a pressure washer manufacturing plant for four years. He has a great passion for mechanical devices and has opened a workshop where he does research on various machines in his leisure time. His high interest in technology made him an expert in commercial and residential pressure washers.

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