Updated at: 28-05-2022 - By: Helen Skeates

What is the proper procedure for changing the oil in a power washer? The first step in performing an oil change is reviewing your owner’s manual. Simply remove the old oil and install a new one. To complete the work, gather the necessary supplies and tools.

This little fix will spare you a slew of hassles down the road. However, if you do it on time, you’ll help keep your pressure washer pump in good working order. Plus, you’ll be covered by a warranty. As a result, devote more time to keeping the pump in good working order.

Do You Need to Change Your Pressure Washer Pump Oil?

It all relies on the sort of pump you have in your pressure washer. Pressure washers that cost less than $400 typically don’t need pump maintenance. However, it’s always a good idea to consult your manufacturer’s instructions.

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A wobbling pump or axial piston pump will tell you whether you don’t need to change your pump’s oil. These are normally pre-filled with oil and then permanently sealed, making it impossible to perform an oil change even if you wanted to.

Other pumps, on the other hand, are in desperate need of an oil change. If your owner’s handbook specifies that you should perform routine oil changes or if your oil pump has a drain and fill plug, you should perform the oil change yourself.

Your pressure washer will benefit greatly if you keep up with regular oil changes, such as:

  • Oil is needed to alleviate the wear and tear, friction, and heating of the moving elements of pumping mechanisms. These parts can be protected against early failure by using oil.
  • It has the added benefit of lowering the risk of overheating. As the seals expand in response to heat, the chance of cracking goes up.
  • Your warranty may be voided if you fail to perform regular oil changes.

It’s best to follow this advice if your pump requires manual oil changes.

How to Change Pressure Washer Pump Oil

Let’s talk about the best way to change the oil in your pressure washer pump.

What You Need

What do you use for catching the spilled oil? Alternatively, you can use an oil pan or an old tray.

The bolt access can be opened with a wrench. Instead of a bolt, your pressure washer may feature a plastic knob.

A funnel for filling the pump with oil is needed.

A container for storing oil.

Using the manufacturer’s recommended amount of oil.

Clothes to clean with.

It is possible to use an oil drain stopper, suction cannon, or electric/manual pump.

Step by Step Instructions

1. Purge the Pump

Remove the wand from the spray gun and turn on the water supply. Pressure wash for two minutes with the engine running to remove any remaining water and grime. Pressure washers are more effective when they are heated up, which aids in removing dirt more quickly.

2. Drain the Oil

Finally, drain the engine’s oil and gas. As a first step, you’ll need to loosen and remove the reservoir top access bolt—or unscrew the knob. This is when your wrench comes in handy if you have a bolt to work with.

Oil can be removed in four ways. An oil drain plug is used to remove it from the pan’s bottom. You can also use a suction gun to remove it. You can also use a manual or electric pump to remove the waste.

Just tilt the pressure washer in either direction to pour the used oil into your container.

Prepare an oil pan or an old tray in case you need to use one of the other options.

3. Store the Oil

Set your oil storage container aside for now after you’ve emptied the old oil. This waste must be disposed of in accordance with local laws. The drain bolt or knob can now be reinstalled.

4. Add New Oil

Be sure to read the manufacturer’s instructions before attempting to use our technique, since they will differ based on the pressure washer and pump you own. Pre-measured pump oil bottles are available on some models.

You should always use a non-detergent pump oil in general. Make sure that the pump is about three-quarters filled of oil by using your funnel.

5. Close Up the Pump

It’s time to reinstall the bolt and retighten it. Wipe up any oil that has gotten on the cap or in the immediate vicinity using a rag. Make sure your pressure washer is in the upright position before you begin cleaning. Pressure washers can be used again after a few minutes.


In order to comply with local laws, you must properly dispose of the used rags.

Top 10 Pressure Washer Pump Oils

1. Cat Pressure Washer Pump Oil

One of the greatest pumps for maximizing the engine of your cat pump has been devised, tested, and proved. For the best protection against corrosion and wear, the pressure washer pump oil type is made from petroleum-based, premium-grade ISO 68 hydraulic oil.

You’ll get better results from this oil if you pay attention to its compatibility. Although this oil is somewhat pricey, it requires very little maintenance when it comes to annual pump lubricant changes to ensure smooth operation of the pump.

The pump’s oil should be changed every 50 hours in order to keep it in good working order for as long as possible.

2. Briggs & Stratton Synthetic Oil

Designed specifically for gas-powered pressure washer pumps, the 6033 Synthetic Oil from Briggs & Stratton is an excellent choice for protecting and extending the life of your pump. The device boasts an easy-to-fill neck for quick and hassle-free maintenance.

This 15-ounce bottle of heavy-duty synthetic oil is compatible with a wide range of pressure washer manufacturers and is responsible for keeping your pump running smoothly year after year. One of the most well-known brands in the industry is Briggs and Stratton.

The pressure washer will run like new for a longer period of time, and you won’t have to worry about spills or messes if you follow the oil amount and fill directions carefully.

3. General Pump 758-115

Pump oil of the highest quality, available in packets of 2 to 6, 16-ounce bottles, is made by another top brand, General Pump. Highly recommended for usage in pump crank cases, this oil has a high natural consistency and is recommended for typical pump crank applications

It’s best suited for general pump systems that require less than 25 BHP. Original equipment manufacturers (OEMs) make this excellent alternative for a variety of industrial pumps. Many people have expressed their appreciation for this pump oil substitute, as evidenced by the testimonials below.

4. Mi T M AW-4085-0016

You must have your pressure washer’s oil changed on a regular basis to keep it functioning well. The Mi T M AW-4085-0016 is ideal for pressure washer pumps because it was designed with them in mind. When you combine these features, you’re guaranteed a high-quality product.

Once you’ve used it, you’ll have peace of mind knowing that the pump will do its job flawlessly. With a high-quality pressure washer pump lubricant, you can rest easy knowing that your pump will last for years to come.

For a reasonable fee, you can extend the life of your pressure washer with this solution that works with a variety of types.

5. Briggs & Stratton 190586GS

Likewise, as previously said, this is another top-notch mineral oil from Briggs & Stratton, the company that started it all. Mineral oil manufactured in the United States is also recommended by several of the world’s leading oil companies.

Because the bottle is pre-measured, you won’t have to wing it when it comes to figuring out how much oil to use with this electric pressure washer pump equivalent.

The result is convenience personified. Regardless of whether or whether this mineral oil can be used as-is, the manufacturer’s recommendations should be carefully followed.

This one, too, will aid with the pump’s ability to function year after year with no problems.

6. Mag 1 60694-6PK

As for the next item on the list, it is suitable for a wide range of pressure washer pump models. The Mag 1 has a number of advantages, including the prevention of sludge and varnish formation, the ability to resist aeration, foaming, and oxidation and rust.

This non-detergent 30W oil performs as expected, is competitively priced, and is recognized to as the best oil for your pressure washer pump.

In addition, this comes with exceptional customer care, which makes you feel at ease and stress-free throughout the experience. All of these advantages make it a pump lubricant that can be used for a long time without losing its effectiveness.

7. Generac 6656 SAE 30

In order to safeguard your pump, the Generac 6656 is created with innovative additive technology. Due to the extra components that make up this pressure washer pump lubricant, everything is possible.

A 20-ounce bottle of this reduces friction and wear at start-up. You may rely on this brand for a wide range of power cleansers due to its long-lasting quality and adaptability. Because it is more cost-effective to maintain rather than replace any piece of equipment, this product will save you both time and money in the long run.

Additionally, it performs as claimed and will keep your Generac device in good working order every year if you use it regularly.

Pressure Washer Pump Oil Substitute and Common Tips in Maintenance

8. AR North America Crankcase Oil

It’s built in Italy, and it comes with a crankcase oil that’s specifically engineered to deliver maximum performance. Various AR North America products, such as the Triplex plunger pump and other pressure washer pumps, can make use of this.

This oil can also be used as a storage oil and as a pre-lube for re-start as needed. This pump, like the others on the list, is an excellent choice for keeping your pump functioning smoothly for years to come.

The AR is simple to use, and the manufacturer’s customer service is quick to respond. This provides sufficient piece of mind.

9. Simpson Cleaning Pressure Washer Pump Guard

As a result, this product is an appropriate replacement for pressure washer oil that provides adequate protection for the pump from freezing down to -25o Fahrenheit between uses.

Nature enthusiasts will be pleased to know that this product is safe for the environment. Using this pressure washer pump oil, you can keep valves, pistons, and seals from sticking.

Because of its high viscosity, this oil is ideal if your machines will be idle for an extended period of time. This is always reliable and gives you excellent value for your money. An excellent choice for long-term storage of your pressure washer.

10. Briggs & Stratton Synthetic Pump Oil

We don’t have to tell you who Briggs & Stratton is. Keep your outdoor power equipment running at its peak with this pressure pump oil substitute. Briggs & Stratton-created replacement and maintenance parts are also genuine.

You don’t have to worry about your engine or other equipment being damaged by this type of oil. This oil is compatible with a wide range of pressure washers and is guaranteed to extend the life of your engine.

This lubricant is an excellent choice for your power tools because it is so easy to apply.

What Kind of Oil Does A Pressure Washer Use: Different Types

1. Detergent Motor Oil versus Non-Detergent oil

  • Non-detergent pump oil should be used in place of the standard detergent motor oil. With no oil filter, detergent motor oils quickly clog up pumps’ internal components, making it difficult to keep the oil clean.
  • Designed for pressure washer pumps, these oils are free of detergents. The word “pump oil” is usually prominently displayed on the label of these goods.

2. All-Purpose Engine Oils

  • The viscosity of oil at various temperatures is designated by different designations in all-purpose motor oils. SAE 30,10W-30 may appear on the label.
  • For example, SAE stands for Society of Automotive Engineers, whereas “W” represents for winter.
  • Temperatures above 40 degrees Fahrenheit are ideal for using SAE 30 oil. A multi-viscosity oil, such as 10W-40 oil, may be beneficial if you reside in an area where temperatures drop below 40 degrees.

Why And When Do You Need To Change The Oil?

Why To Change Oil

  • Friction and wear can be reduced by using oil to assist lubricate moving parts. Avoiding routine oil changes reduces the lifespan of your vehicle.
  • Lubrication helps to reduce heat by minimizing friction. Metal parts expand when they get hot, which increases the danger of them breaking or fracturing.
  • You don’t have to change the oil in every pressure washer, though. Pumps that are sealed by design are commonly seen in devices intended for domestic use.

When To Change Oil

  • For more information on pump oil changes, refer to your pump’s handbook. It should have a section dedicated to the subject matter. It should be recommended in this section how often the oil should be changed.
  • After 200 to 250 hours of use, or about every three months, it is customary to perform an oil change. It doesn’t matter how little you use the machine; you should still change the oil annually.


What kind of oil do you put in a pressure washer pump?

If the temperature is above 40 degrees Fahrenheit, an all-purpose motor oil should be used. Using 10W-30 oil if the temperature drops below 40°F is permitted.

How often should you change pressure washer pump oil?

Replace the oil every 4-5 days if the machine is regularly used. You should change your oil every three months if you use the machine frequently or once a year if you don’t use it at all.

Do all pressure washers need pump oil?

Pressure washers do not require pump oil. Some pumps have already been loaded with oil and come with a seal that lowers the need for regular upkeep.

Can I use synthetic oil in my pressure washer?

There are certain pressure washers that can be used with synthetic oil, but not all of them can. In other words, it would be contingent on the computer you purchase. Before purchasing a pressure washer, make sure to check its specifications for this feature.

What kind of oil goes in a Briggs and Stratton pressure washer?

A Briggs and Stratton 2200 PSI pressure washer requires SAE 30 oil.

How do you drain the oil on a Briggs and Stratton pressure washer?

Drain the engine’s oil and fuel. With an Allen wrench, remove the oil cap from the water pump. Drain the used oil from the pressure washer by tilting it. After the oil has been emptied, reverse the tilt of the device.

How much oil goes in a Troy Bilt pressure washer pump?

Pressure washers typically use about 5 oz of pump oil on a daily basis. One bottle of pump oil is sufficient for one service. No oil filter means non-detergent oil for the vast majority of pumps.

Do I need to change the oil in my pressure washer?

As a preventative measure, a pump oil change should be performed every three to five months. The hardworking pressure washer’s high pressure pump is its beating heart.

What kind of oil does a Troy Bilt 2800 PSI pressure washer use?

Does a 2800 PSI Pressure Washer Use a Certain Oil Type? A 15-ounce bottle of synthetic oil for pumping purposes.

Pressure Washer Pump Oil Substitute and Common Tips in Maintenance

What type of oil does a Briggs and Stratton pressure washer use?

Briggs & Stratton suggests using synthetic 5W-30 oil, which is rated for use in temperatures ranging from -20°F to 120°F, for maximum protection in all conditions. Use 5W-30 in the winter for optimal results.

What is sae30 oil?

The engine oil was categorized as SAE 30 according to the SAE standard. These monograde oils are mostly employed above the freezing point of water in high-intensity environments. Oils with an SAE 30 designation have poor cold flow characteristics. This has a range of at least 9.3 -12.4 mm2/s at 100 °C (engine operating temperature).

Does a pressure washer pump have oil in it?

Pressure washers costing less than $400 typically use a pump that requires no routine maintenance at all. During the manufacturing process, they are filled with oil and then permanently sealed to prevent leaks. Pump oil should be replaced on a regular basis and maintained at the recommended level in all other pumps.

How often should you change pressure washer pump oil?

After 30 to 50 hours of use with a new pressure washer, you should change the pump oil. Once every three months is the next requirement, which is 300 hours. Routine maintenance, such as changing the oil every three months if your machine is going to be used frequently, is recommended.

How much oil goes in a Briggs and Stratton pressure washer?

Oil for the 2100 Series engine from Briggs and Stratton is 5W-30 37 ounces (4000 PSI Pressure Washer). Please note that you will need two bottles to suit your oil needs.

How much oil goes in a Simpson pressure washer?

Oil for conventional pressure washer pumps, 15w-40, 16 ounces, SIMPSON.

Why is my pressure washer oil GREY?

An oil that seems to be milky indicates that water has spilled through the seals, a sign of defective O-rings or oil seals. Water and oil combine to form a hazy suspension, giving the mixture its milky appearance.

Can 10w30 be used instead of 5W-30?

If the synthetics in the two oils are the same, they will mix flawlessly. Since one will be topping up, combining 10w30 and 5w30 isn’t an issue. The engine will not be harmed by mixing different viscosities of oil. Because their viscosities are so close, blending 5w30 and 10w30 engine oils is quite safe.

Is SAE 30 oil the same as 10w30?

At low temperatures, SAE 10w30 oil has a 10w thickness, but SAE 30 oil has a 30w thickness. At low temperatures, SAE 30 can have enormous viscosity and poor pumpability. The difference in thickness between SAE 10w30 and SAE 30 is that SAE 10w30 is not thick at low temperatures, but SAE 30 is.

Can I use 10W40 instead of 10w30?

The viscosity of 10W40 oil is higher than that of 10W30 oil, allowing it to maintain its thickness at higher temperatures. In this situation, 10W-40 motor oil would theoretically provide superior protection against engine wear contact at higher temperatures than 5W-20.

Can you use SAE 30 instead of 10w30?

Oils with a viscosity of SAE 30 have only one. Multi-viscosity: 10w30 Temperature affects the recommended viscosity of motor oil since natural oils also vary viscosity. At higher temperatures, the oil in an SAE 30 engine will thin out.

Can I use SAE 30 instead of 5w20?

Can 5w30 be substituted for 5w20? It is not advisable to do so. This means that 5w30 is somewhat thicker than 5w20, despite the fact that both have the same winter rating of 5. Using high viscosity oil puts your engine at risk.

Is SAE 30 non detergent oil?

Mineral base oil SAE 30 Non Detergent Lubricating Oil is used in systems that specify non detergent oils. Air compressors and hydraulic systems that call for non-detergent lubricants should use SAE 30 Non-Detergent Lubricating Oil.

Is pump oil the same as engine oil?

Discernment between pump oil and motor oil. The additives used to modify the oil’s qualities are what set it apart. Pump motor oil has the following additional differences from conventional motor oil: As a detergent for motor oil, magnesium sulfonate is utilized.

Can I use synthetic oil in my pressure washer?

Almost any pressure washer can run on synthetic oil. Check your model’s owner’s handbook to make sure it’s compatible. Non-detergent oil should be used for the pump. Pumps, in contrast to engines, lack an oil filter.

What kind of oil does a Simpson pressure washer use?

Because of its non-foaming nature, our Premium Pump Crankcase Oil protects essential engine components from wear and corrosion while also enhancing pump performance..

What is the best oil for a Briggs and Stratton engine?

Briggs & Stratton Fully Synthetic Premium Long-Life Oil is the lubricant of choice. Briggs & Stratton warranty requirements for appropriate oil use are met by using this high quality detergent oil. With synthetic oil, engine break-in procedures are exactly the same.

It’s A Wrap!

Now you can learn how to quickly and efficiently change the oil in a pressure washer as part of home maintenance. The pressure washer, on the other hand, is doing the most of the heavy lifting. Changing the oil and following the instructions outlined above is the simplest and most effective method. Be persuaded by the arguments presented above, and then take steps to ensure that your pressure washer lasts as long as possible. Pressure washer pump oil and how to change pressure washer pump oil are also covered.