How much oil does a Subaru pressure washer take?
The typical oil capacity for most Subaru gas-powered pressure washers is about 0.6 quarts (roughly 20 ounces).
The exact amount depends on the engine model and displacement. Always verify with the owner’s manual or by checking the dipstick on the engine when filling to ensure you reach the correct level for your specific unit.
Oil capacity by model and engine size
Because Subaru uses several engine options in residential pressure washers, capacity is model-specific. The ranges below reflect common configurations used in popular Subaru units.
- Typical compact units: about 0.5–0.6 quarts (16–20 ounces) of engine oil.
- Mid-size units: about 0.6–0.7 quarts (20–22 ounces).
- Larger units: about 0.7–0.8 quarts (22–25 ounces).
If your model is not listed here, check the manual or contact Subaru support to confirm the exact capacity for your engine.
Where to find exact capacity
Look in the owner’s manual under specifications or on a label near the oil fill cap/dipstick. If you no longer have the manual, you can often locate the exact capacity by model number on Subaru’s official support site or by contacting a authorized service center.
How to check and fill the oil
Use this step-by-step guide to check and top up oil correctly.
- Park the pressure washer on a level surface and let the engine cool before checking oil.
- Clean around the oil fill cap and dipstick to prevent dirt from entering the engine.
- Remove the dipstick, wipe it clean, reinsert fully, then pull it out again to read the level.
- If the oil level is below the Full mark, add oil in small increments, checking after each addition to avoid overfilling.
- Once the level is at Full, replace the dipstick and fill cap securely; run the engine for a brief period and recheck for leaks or changes in level.
Maintaining the correct oil level is essential for proper lubrication and engine longevity.
Oil type and viscosity recommendations
The right oil grade protects the engine across temperatures and operating conditions. While exact requirements vary by model, these guidelines apply to many Subaru pressure washers.
- Common starter options: SAE 5W-30 or SAE 10W-30 engine oil, depending on climate and model.
- In very hot climates or older engines (per manual guidance): SAE 30 may be recommended for certain units.
- Synthetic blends are acceptable if the manual permits; always verify the recommended viscosity for your specific model.
Always confirm the exact oil specification for your model in the owner’s manual or on Subaru’s official product page, as using the wrong oil or wrong viscosity can affect performance and warranty coverage.
Model-specific notes
Some Subaru pressure-washer models may have unique oil requirements or maintenance intervals. If in doubt, consult the model’s documentation or contact an authorized Subaru service installer to ensure you’re using the correct oil type and capacity for your unit.
Summary
In most cases, a Subaru pressure washer takes about 0.6 quarts (roughly 20 ounces) of engine oil. Exact capacity depends on the engine size and model, so always verify against the owner’s manual or the dipstick. Use the oil viscosity recommended for your specific unit and follow proper checking and filling procedures to maintain engine health and performance.
How much oil does a Subaru EA190V pressure washer take?
The Subaru EA190V engine has an oil capacity of 0.6 liters or 20 ounces. To refill, you should use SAE 10W-30 oil and add new oil until the dipstick indicates the correct level.
- Capacity: 0.60.60.6 L (202020 oz)
- Oil type: SAE 10W-30 is recommended for general use.
- Refilling: Fill to the "Upper level" or dipstick mark to avoid overfilling.
How many quarts of oil does a pressure washer take?
The amount of oil a pressure washer takes depends on the specific model, but a common range is between 1 quart and 20 ounces for the engine, and a separate amount for the pump, which is often around 14 to 22 ounces. Always consult the owner's manual for your specific model, as some engines require as little as 20 ounces while others take closer to 20.48 ounces. The pump capacity also varies, so it is best to check your manual for the correct oil type and quantity.
Engine oil
- Small engines (6 hp or less): Generally take around 1 quart of 10W-30 or 30W oil.
- Mid-size engines: May require around 20 ounces (0.6 liters) of oil.
- Larger engines: Can hold up to 20.48 ounces or more.
Pump oil
- Most pumps: The pump requires its own oil, separate from the engine. A common capacity is 14 ounces, but this can vary widely.
- Check the manual: Some pumps, like those made by CAT, may take up to 22 ounces.
- Use the correct oil: Always use oil designed specifically for pressure washer pumps, or a non-detergent SAE 30W oil if the manual allows, as they often contain rust inhibitors and anti-foaming agents.
How to find the right amount
- Check the dipstick or sight glass: The easiest way to check the oil level is to use the dipstick or sight glass on the pressure washer itself.
- Refer to the manual: For the most accurate information, consult your owner's manual. It will provide the exact type and amount of oil needed for both the engine and the pump.
- Measure the old oil: If you can, measure the amount of old oil you drained to get a good estimate of how much you need to add. This is especially helpful if you don't have a manual.
- Add oil slowly: Avoid overfilling, as this can damage seals.
Can I use SAE 30 instead of 10W30 in my pressure washer?
The general consensus is that 10w30 is an acceptable replacement for an SAE30 oil.
What kind of oil does a Subaru pressure washer take?
For a Subaru pressure washer engine, use SAE 10W-30 engine oil, though SAE 30 is also an option, especially for warmer temperatures. Always consult your specific pressure washer's owner's manual for the exact recommended oil type and oil capacity.
You can watch this video to learn how to change the oil in a pressure washer with a Subaru engine: 58sWhite's TrashYouTube · Apr 4, 2021
Engine oil
- Primary recommendation: SAE 10W-30 is the most common recommendation for most Subaru pressure washer engines and can be used across a wide range of operating temperatures.
- Alternative for warmer climates: SAE 30 weight oil is also suitable, particularly in hotter weather. Never use gear oil in the crankcase.
- Synthetic options: You can use synthetic oil, but it is not required. The most important factor is using an oil that meets the correct viscosity grade for your operating temperature.
Pump oil
- Separate from engine oil: The pressure washer pump requires separate oil from the engine, and this is often a non-detergent SAE 30 weight oil.
- Check your manual: The type of oil needed for the pump can vary depending on the brand and model, so always check the owner's manual to confirm the correct type.
