What Kind Of Oil For Pressure Washer Pump? Everything You Need To Know

Helen Skeates
Helen Skeates
26 min read

What kind of oil should I use in my pressure washer pump? In addition to engine oil, this is the type of oil you should use. However, it is prudent to consult the handbook beforehand, in case non-detergent oil is necessary.

Keep in mind that the unit’s oil will need to be replaced or topped off at some point. This way, the pressure washer will be able to perform to its full potential.

For starters, it’s a good idea to give your outdoor space a little TLC from time to time. However, keep in mind that ATF, or automatic transmission fluid, is used in electric pressure washers. Before you do anything, make sure you’ve read the handbook to learn how much oil to use and what kind of oil to use.


Different Kinds Of Pressure Washer Oil To Use

Pressure washer pumps use what kind of oil? The following is a list of the various pressure washer oil options you’ll need to consider:

#1. Non-detergent pump oil

Pump oil improves the performance of some pressure washers. Apply a thirty-W non-detergent oil to the bearing’s surfaces to prevent the harm that grime can cause. An engine unit’s working surface is kept clean by adhering the impurities to the engine unit itself using a non-detergent oil. Indeed, this oil type can be used in a variety of ways prior to the oil filter being widespread, as this is the preferred oil filter before any other. Learn about the finest detergents for pressure washers.

Briggs & Stratton® Pressure Washer Pump Oil at Menards®

#2. All-purpose engine oil

Using an all-purpose motor oil is a good idea in mild weather. The SAE30 type is one of the best choices for temperatures exceeding 40 degrees Fahrenheit, according to the manufacturers. If the temperature falls below these limits, 10W-30 oil should be used to help the power washer start up more smoothly. If you don’t use the right type of oil at the right temperature, you’ll end up using more oil.

#3. Engine oil versus pump oil

The additives in engine oil and pump oil are not the same. Magnesium sulfonate is a detergent addition in motor oil, while silicone compounds or PDMS are in pump oil. Modern engines also come equipped with an oil filter that allows them to use detergent oil. In order to keep your machine clean, use this detergent oil. In addition, an oil filter keeps them out of the bearings by trapping them. If you don’t use an oil filter and detergent oil, the pollutants and oil will build up quickly. Keep the engine from overheating or breaking down by doing regular oil changes. Disinfect the pump with some non-detergent oil to get rid of all the gunk. The pump’s internal components are exposed to additional wear and tear. Learn more about oil pumps.

Methods Of Changing The Oil For Pressure Washer

To avoid having to spend money on a new pump, you should change the pressure washer’s oil. Warm the oil in the pressure washer by running it for a few minutes. Drainage is made simple by the constant flow of warm oil. Disconnect the hose and turn the engine off. Then, use a wrench to unscrew the oil cap. Drain the oil with a pump oil drain plug and the pressure washer gasoline. When you refill the pressure washer with new oil, be sure to replace the filter that was removed. Take out the old oil and put in a new one. Overfilling the tank might damage the engine and result in smoke and fumes. Always remember to put the oil cap back on when you remove it. Before you pack it up, make sure you clean up the oil spill. Find out more about pressure washer oil changes.

#1. Check the oil level

Before turning on the pressure washer, make careful to check the oil level. Fortunately, some vehicles have an oil sight window that allows the owner to check the level of oil in the engine. In this scenario, they don’t need to remove the cap, but they do check the dipstick just the same.

#2. Check the frequency of the changing oil

If you start power washing your car in the winter, or the spring, make sure to perform some oil changes. Thickening the oil causes a totally working pump to fail in the cold. As a result, you’ll have to fork up more cash. Fill it up as necessary. Oil should be changed more frequently, but no more than every 50 hours in a tropical climate. You might also want to learn how to change the oil in a pressure washer pump.

What About The 10W 30 and SAE30

The rate at which a liquid flows is known as its velocity. When something has a low velocity, it signifies that it can freely flow in all directions, just like water. Syrup, ketchup, and other liquids cannot flow in any direction due to high velocity. As compared to SAE30, SAE10 has a lower velocities. The second one is less fluid than the first. 10W 30 tells the oil to perform at SAE10 at low temperatures and SAE30 at higher temperatures thanks to its dual-velocity signaling. Choosing the correct oil for a machine is now a lot easier.

Why lubricate pressure washer pump?

It is self-evident that lubrication is necessary for the smooth operation of a machine’s moveable elements. For the best performance, gasoline-powered pressure washer pumps need to be lubricated on a regular basis. Electric models don’t need to be oiled. Furthermore, because pressure washer pumps are the workhorses, it is essential to maintain them in top working condition.

Mechanics, especially design components, rely heavily on lubrication. Engineers will tell you that a two-week lesson on the proper type of oil for each machine component takes at least two weeks. The following are some reasons to pay attention to the condition of your pressure washer’s oiling pumps:

Improves the performance of pumps

In most cases, oiling the pumps makes them work better. Pressure washer pumps will wear out if they are not lubricated. If contaminated oil in the pump starts to overheat, you’ll notice it. In order to draw water into the washer, a pump must have a lubricant that ensures smooth contact between the pump and other parts of the machine.

Lubrication is a requirement for meeting warranty terms and conditions

When it comes to fulfilling their warranty responsibilities, some manufacturers are incredibly rigid. If you’re using a pressure washer, be sure to read the instructions carefully before using it. If you neglect to grease moving parts like the pump and motor, would the manufacturer void the warranty? If you don’t lubricate your pressure washer regularly, it will eventually break down and you’ll have to get a new one.

Lubrication ensures longevity

Loading and maintaining machinery like power washer pumps is the most important part of their upkeep. Wear and tear increases when parts that aren’t lubricated rub against each other. Because of this, you’ll have to buy a new pump sooner than you need to. Lack of oiling speeds up the wear and tear of machines, which increases the expense of maintenance.

It is costly rebuilding/repairing pressure washer pumps

Your power washer pump runs the danger of burning out if it isn’t properly lubricated. Some of the damage may be irreparable. There is no doubt in our minds that you would rather avoid a route of neglect than one of carelessness. As long as you don’t neglect to lubricate the unloader valve, you won’t have to worry about much. If that’s the case, all you’ll have to do is get into the pump and clean it. In addition, the lack of lubrication makes it simple to repair damaged o-rings and seals. Swash plate and piston issues, on the other hand, are more advanced and frequently necessitate a total pump overhaul.

What is the difference between motor and pump oil?

The qualities of pressure washer motor and pump oil are the main distinctions. Lubricants can have a wide range of qualities due to the addition of various additives. Pump oils frequently contain silicon compounds, as you may have noticed. Their job is to keep foam from forming. Detergents such as magnesium sulfonate are found in motor oil, on the other hand. As a result, you might wonder: What do all of these differences mean? We looked at the discrepancies and came to the conclusion that:

Detergent vs. non-detergent oils

Detergent oils clean the motor’s internal components. Ball bearings are protected from impurities by a filter. Oil filters are common in modern engines, and detergent oils are the best for them. The lack of a filter means that oil gets dirty more quickly, requiring more frequent replacement. Pumps in pressure washers can use non-detergent lubricants. This is due to the lack of oil filters. As a result, using detergent oils to lubricate pumps increases the danger of wear and tear.

Non-foaming vs. non-aeration oil additives

Pump oils should have anti-aeration and anti-foaming chemicals. Aeration can lead to unwanted chattering and a reduction in the viscosity of the oil. Pressure washer components, such as the water pump, cannot be effectively cleaned with aeration-induced oil viscosity. Thus, anti-aeration chemicals are commonly found in pump oil. Foaming oil in the pump, on the other hand, might lead to pressure problems or oil leakage.

Oil labeling as a distinguishing characteristic

Look for the designation ND, which stands for non-detergent, when purchasing pump oil. Also, keep an eye out for phrases like “pump oil.” Oil labeled “vintage automobiles,” typically dating back to the early 1990s, is appropriate for pressure water pumps. Non-detergent oils were used in automobiles made prior to the introduction of oil filters in the 1920s and 1930s.

Be sure to look out for labels like 15W-40 or SAE 30. What do they signify for a first-time homesteader trying to find pressure pump oil mean? It all comes down to viscosity. SAE 20 is a good example of an oil that flows more easily than SAE 40 when the same circumstances are met. A multi-viscosity product will have a label such as SAE15 W 40 on it. Low viscosity is represented by the first value (15), while high viscosity is represented by the second value (40).

When to change pump oil in your pressure washer

There is no need to change the oil in most domestic pressure washer pumps because they are permanently sealed. In the event of pump failure, it is best to replace rather than repair. Reading the instruction manual is the best way to figure out what to do. However, the pumps on the majority of today’s power washers need to be lubricated on a regular basis. One term for this is an oil change.

Pump maintenance is essential for the reasons we discussed previously, regardless of the pressure washer model or brand. When it comes to determining how often to change the oil, let’s say this:

  • Oil level should be checked with a dipstick to determine if it needs to be changed. Oil that is darker, milky, and includes particles should be replaced. For the most part, you should adhere to non-foaming and non-aerating pump oils containing anti-rusting ingredients.
  • We recommend changing the pump oil 10 hours after the first use, which is often at the start of spring. The problem here is that the oil in power washer pumps thickens throughout the winter, thus failing to replace it at the beginning of a new season puts the component in jeopardy of failure.
  • Take a look at the owner’s guide: You should always read the instruction manual and learn about pressure pump care and maintenance. The frequency of pump oil change is critical to inexperienced craftsmen, as stated by most manufacturers.
  • Next time you should change the oil is after every 250 hours of running the machine. Most manufacturers adhere to this regulation. It’s a quarterly (3-month) cycle, which is what it means. Pressure washer motor oil also falls under this category.

Pressure Washer Pump Oil | Power Washer Accessories | STIHL USA

Best Pressure Washer Pump Oil – Steps to Change Oil 2022

1. Cat Pressure Washer Pump Oil

In order to maximize the performance of your cat pump’s engine, this pump was specifically developed, 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

The Briggs & Stratton 6033 Synthetic Oil is ideal for gas-powered pressure washer pumps because it is made specifically for them. The device boasts an easy-to-fill neck for quick and hassle-free maintenance.

This heavy-duty synthetic oil comes in a 15-ounce bottle and is suitable for numerous pressure washer manufacturers. It keeps your pump running smoothly year after year. For years, Briggs and Stratton has been relied upon by customers to get the job done.

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 manufactured by General Pump, a well-known brand, is available in packs of two to six 16-ounce bottles. Pump crankcases benefit greatly from the use of this high-quality oil, which boasts a naturally consistent natural consistency.

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. Look at what other people have to say about their experiences with this pump oil substitute.

4. Mi T M AW-4085-0016

Pressure washers require regular annual oil changes to keep them working efficiently. For pressure washer pumps, the Mi T M AW-4085-0016 is a must-have accessory. With these characteristics, you can’t go wrong with a high-quality product.

Use this once and the pump will continue to perform flawlessly. With a high-quality pressure washer pump lubricant, you can rest easy knowing that your pump will be in peak condition for years to come.

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

5. Briggs & Stratton 190586GS

As previously noted, Briggs & Stratton, the big daddy of engine manufacturers, provides another another high-quality mineral oil. Mineral oil created in the United States is also recommended by some of the world’s most prestigious oil companies.

When using this electric pressure washer pump oil substitute, you won’t have to guesstimate how much product to use because the bottle is already pre-measured.

As a result, you get the best of both worlds. Clarity is required on this issue, and manufacturer instructions should be carefully read, whether or not this mineral oil can be used as is.

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

6. Mag 1 60694-6PK

Next up, we have a pressure washer pump that works well with this product. Sludge and varnish formation is prevented, aeration is inhibited, foaming is prevented, and oxidation and rust are protected thanks to the Mag 1.

If you’re looking for a non-detergent 30W oil for your pressure washer pump, you can’t go wrong with this.

In addition, this comes with exceptional customer care, which makes you feel at ease and stress-free throughout the experience. With all of these advantages, it’s an all-purpose pump lubricant that’ll keep your pump running smoothly for years to come.

7. Generac 6656 SAE 30

The superior additive technology in the Generac 6656 helps keep your pump safe from damage even when operating in harsh environments. The additional chemicals in this pressure washer pump lubricant make this feasible.

This product, which comes in a 20-ounce bottle and reduces friction and wear during startup, is on the market. You can count on this brand for its long-term durability and adaptability to a variety of power cleaners. Using this product will save you both time and money because it is more cost-effective to maintain rather than replace any piece of equipment.

8. AR North America Crankcase Oil

It is an Italian-made crankcase oil, the AR North America AR64516, that has been specifically engineered to deliver great performance. Various AR North America products, such as the Triplex plunger pump and other pressure washer pumps, can make use of this.

You can store it and use it as a pre-lube for restarting with the AR64516. This pump, like the others on this list, does an excellent job of keeping your pump in good working order year after year.

The AR is simple to use, and the manufacturer’s customer service is quick to respond. This provides appropriate 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.

Eco-friendly products are great for nature-lovers, as well. 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 going to give you the best value for your money. It’s a great way to keep your pressure washer safe and secure for longer than 30 days.

10. Briggs & Stratton Synthetic Pump Oil

There is no need to introduce Briggs & Stratton. Keep your outdoor power equipment in top shape with this pressure pump oil substitute. Briggs & Stratton makes the replacement and maintenance parts as well as the oil, so you know you’re getting authentic products.

You don’t have to worry about a lot of maintenance with this sort of oil. This oil is compatible with a wide range of pressure washers and is guaranteed to extend the life of your engine.

Absolutely simple to use this lubricant is a perfect option for your power tools.

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

1. Detergent Motor Oil versus Non-Detergent oil

  • Absolutely simple to use this lubricant is a perfect option for your power tools.
  • You can’t go wrong with this lubrication for your power tools.

2. All-Purpose Engine Oils

  • This lubricant is an excellent choice for your power tools because it’s so easy to apply.
  • “W” denotes winter in this acronym for the Society of Automotive Engineers (SAE).
  • Temperatures above 40 degrees Fahrenheit are ideal for using SAE 30 oil. A multi-viscosity oil like 10W-40 oil may be beneficial if you reside in an area where the temperature drops below 40 degrees.

How To Change Pressure Washer Pump Oil in 9 Steps:

  • The first step is to flush the pump of any debris. Activate the pressure washer by connecting it to the water source and turning it on.
  • To create a constant jet of water, turn on the engine and pull the trigger. Hold the position for two minutes at a time.
  • Turn off the washer and remove it from the water source after cleansing the system. Under the pump oil drain plug, place a pan or a bucket.
  • Drain the fuel and oil from the engine before changing the engine oil.
  • Remove the oil cap from the water pump’s oil supply. In some cases, an Allen wrench is required to remove the cap.
  • Pour oil into the pump by reattaching the drain plug and reconnecting it. Remove the oil cap and use a rag to remove any remaining oil. Finally, the pressure washer is ready to go!
  • To determine how much oil to add to the pump, follow the instructions in the user handbook. There are also premeasured bottles on the market.
  • Tilt the pressure washer to remove the drain stopper and remove the cap. Drain the oil until it no longer drips into the pan or bucket.

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. Your vehicle’s lifespan will be shortened if you don’t get your oil changed.
  • Lubrication aids in heat reduction by minimizing friction. Metal parts expand when they get hot, which increases the danger of them breaking or fracturing.
  • There are some pressure washers that don’t need to be re-oiled. Pumps in equipment intended for domestic usage are frequently hermetically sealed.

When To Change Oil

  • Check your pump’s user handbook if you’re not sure if it needs oil changes. There should be a section devoted to the subject. There should also be a recommendation for how often the oil should be changed here.
  • Changing the oil every 200 to 250 hours of use, or every three months, is the standard guideline. 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?

For temperate conditions, it is better to have all-purpose engine oil usually for above 40° F. But it the temperature goes below 40°F, you can use 10W-30 oil.

7 Little Known Facts (You Should Know) About Changing Pressure Washer Water Pump Oil - PRESSURE WASHR

How often should you change pressure washer pump oil?

For temperate conditions, it is better to have all-purpose engine oil usually for above 40° F. But it the temperature goes below 40°F, you can use 10W-30 oil.

Do all pressure washers need pump oil?

When the temperature rises above 40 degrees Fahrenheit, it is preferable to use an all-purpose engine oil. However, if the temperature drops below 40°F, 10W-30 oil can be used.

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.

It’s A Wrap!

There are a number of things you need to know now, such as what kind of oil to use in a pressure washer pump and how to do it properly. The choice between non-detergent engine pump oil and regular engine oil comes down to personal preference and financial constraints. Every time you use a pressure washer that requires oil, be careful to check the lubrication level. In order to avoid damaging the fuel pump, do not start the engine when it is still at a low level. The oil recycling center must also properly dispose of any old fluid that has been taken from the pressure washer. Avoid dumping it down a storm drain or onto a natural area.

Helen Skeates

Helen Skeates

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